.Net NPOI 根据excel模板导出excel、直接生成excel

2019年12月01日 阅读数:55
这篇文章主要向大家介绍.Net NPOI 根据excel模板导出excel、直接生成excel,主要内容包括基础应用、实用技巧、原理机制等方面,希望对大家有所帮助。

1、根据Excel模板导出excel

一、导入NPOI.dll 

二、DAL中添加类ExportExcel.cs

using NPOI.SS.UserModel;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Web;
namespace DAL.Assessment
{
    public class ExportExcel
    {
        NPOIExcel excel;

        //构造 采用模板方式
        public ExportExcel(string tempPath)
        {
            excel = new NPOIExcel(tempPath);
        }

        /// <summary>
        /// 流的形式
        /// </summary>
        /// <returns></returns>
        private MemoryStream WriteToStream()
        {
            return excel.Save();
        }

        /// <summary>
        /// PPK 导出
        /// </summary>
        /// <param name="list"></param>
        /// <param name="fileName"></param>
        public void PPKToExcel(string ProductInfo,string avgWeightStr, string DivWeightStr, int[][] dataArray, string fileName)
        {
            HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
            HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", HttpUtility.UrlEncode(fileName)));
            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
            HttpContext.Current.Response.Clear();
            ISheet sheet;
            sheet = excel.ActiveSheet;
            sheet.ForceFormulaRecalculation = true;   //容许excel里的公式生效

            ICellStyle style = excel.CreateCellStyle();
            style.BorderBottom = BorderStyle.THIN;
            style.BorderLeft = BorderStyle.THIN;
            style.BorderRight = BorderStyle.THIN;
            style.BorderTop = BorderStyle.THIN;
            style.WrapText = true;
            style.VerticalAlignment = VerticalAlignment.CENTER;
            ///////////////
            ICellStyle styleGray = excel.CreateCellStyle();
            styleGray.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.GREY_40_PERCENT.index;
            styleGray.FillPattern = FillPatternType.SOLID_FOREGROUND;//设置背景是否填充
            styleGray.FillBackgroundColor = NPOI.HSSF.Util.HSSFColor.GREY_40_PERCENT.index;
            styleGray.VerticalAlignment = VerticalAlignment.CENTER;

           
            excel.SetValue(3, 16, ProductInfo);
            excel.SetValue(3, 25, Convert.ToDouble(avgWeightStr));
            excel.SetValue(3, 28, Convert.ToDouble(DivWeightStr));
            excel.SetValue(4, 26, DateTime.Now);

            int rowIndex = 13;
            for (int i = 0; i < 6; i++)
            {
                int colIndex = 2;
                for (int j = 0; j < dataArray[i].Length; j++)
                {
                    excel.SetValue(rowIndex, colIndex, Convert.ToDouble(dataArray[i][j]) / 100);  //给excel里格子赋值
                //excel.SetStyle(rowIndex, colIndex, styleGray); 设置格式
                    colIndex++;
                }
                rowIndex++;
            }
            byte[] fs;
            fs = WriteToStream().ToArray();
            HttpContext.Current.Response.BinaryWrite(WriteToStream().GetBuffer());
            HttpContext.Current.Response.End();
        }


    }
}

添加 类NPOIExcel.cs
using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.OleDb;
using System.IO;
using System.Drawing;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using NPOI.HSSF.Util;
using NPOI.SS.Util;

public class NPOIExcel
{
    internal IWorkbook Book { get; set; }

    private int sheetID = 0;
    /// <summary>
    /// 当前活动的SheetID,全部的操做将指向这个Sheet
    /// </summary>
    public int ActiveSheetID
    {
        get
        {
            return sheetID;
        }
        set
        {
            sheetID = value;
        }
    }

    /// <summary>
    /// 当前活动的SheetName,全部的操做将指向这个Sheet
    /// </summary>
    public string ActiveSheetName
    {
        get
        {
            return Book.GetSheetAt(sheetID).SheetName;
        }
        set
        {
            sheetID = Book.GetSheetIndex(value);
        }
    }
    /// <summary>
    /// 当前活动的Sheet,全部的操做将指向这个Sheet
    /// </summary>
    public ISheet ActiveSheet
    {
        get
        {
            return Book.GetSheetAt(sheetID);
        }
    }

    /// <summary>
    /// 第一行非空行的行号
    /// </summary>
    public int FirstRowNum
    {
        get
        {
            return Book.GetSheetAt(sheetID).FirstRowNum;
        }
    }

    /// <summary>
    /// 最后一行非空行的行号
    /// </summary>
    public int LastRostNum
    {
        get
        {
            return Book.GetSheetAt(sheetID).LastRowNum;
        }
    }

    /// <summary>
    /// 无模板的Excel生成或操做
    /// </summary>
    public NPOIExcel()
    {
        Book = new HSSFWorkbook();
        Book.CreateSheet();
    }

    public NPOIExcel(Stream fileStream, string fileName)
    {
        if (fileName.Substring(fileName.LastIndexOf(".")) == ".xls")
        {
            Book = new HSSFWorkbook(fileStream);
        }
        else
        {
            Book = new XSSFWorkbook(fileStream);
        }
    }
    /// <summary>
    /// 带模板或数据的Excel生成或操做
    /// </summary>
    /// <param name="fileName"></param>
    public NPOIExcel(string fileName)
    {
        Book = CreateBook(fileName);
    }

    /// <summary>
    /// 建立Excel Book
    /// </summary>
    /// <param name="fileName">模板文件名</param>
    /// <returns></returns>
    private IWorkbook CreateBook(string fileName)
    {
        FileInfo file = new FileInfo(fileName);
        if (!file.Exists)
        {
            File.Create(fileName).Close();
        }
        FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
        IWorkbook book;
        if (file.Extension == ".xls")
        {
            book = new HSSFWorkbook(fs);
        }
        else
        {
            book = new XSSFWorkbook(fs);
        }
        fs.Close();
        if (book.NumberOfSheets == 0)
        {
            book.CreateSheet();
        }
        return book;
    }

    /// <summary>
    /// 新建Sheet
    /// </summary>
    /// <returns>新建Sheet</returns>
    public ISheet CreateSheet()
    {
        return Book.CreateSheet();
    }

    /// <summary>
    /// 新建Sheet
    /// </summary>
    /// <param name="sheetName">新建Sheet的名称</param>
    /// <returns>新建Sheet</returns>
    public ISheet CreateSheet(string sheetName)
    {
        return Book.CreateSheet(sheetName);
    }

    /// <summary>
    /// 设置行高
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="height">高度</param>
    public void SetRowHeight(int rowIndex, float height)
    {
        IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
        if (row == null)
        {
            row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
        }
        row.Height = (short)(height * 20);
    }

    /// <summary>
    /// 设置列宽
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="columnIndex">列号</param>
    /// <param name="width">宽度</param>
    public void SetColumnWidth(int columnIndex, short width)
    {
        Book.GetSheetAt(sheetID).SetColumnWidth(columnIndex, width * 256);
    }

    /// <summary>
    /// 获取或设置默认行高
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    public short DefaultRowHeight
    {
        get
        {
            return (short)(Book.GetSheetAt(sheetID).DefaultRowHeight / 20);
        }
        set
        {
            Book.GetSheetAt(sheetID).DefaultRowHeight = value * 20;
        }
    }

    /// <summary>
    /// 获取或设置默认列宽
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    public int DefaultColWidth
    {
        get
        {
            return Book.GetSheetAt(sheetID).DefaultColumnWidth;
        }
        set
        {
            Book.GetSheetAt(sheetID).DefaultColumnWidth = value;
        }
    }

    /// <summary>
    /// 某一列的列宽自动调整大小
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="colIndex">列号</param>
    public void AutoColWidth(int colIndex)
    {
        Book.GetSheetAt(sheetID).AutoSizeColumn(colIndex, true);
    }

    /// <summary>
    /// 隐藏一行
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    public void HiddenRow(int rowIndex)
    {
        IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
        if (row == null)
        {
            row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
        }
        row.ZeroHeight = true;
    }

    /// <summary>
    /// 删除一行
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    public void RemoveRow(int rowIndex)
    {
        IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
        if (row != null)
        {
            ActiveSheet.RemoveRow(row);
        }
    }

    /// <summary>
    /// 读取单元格的值
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="columnIndex">列号</param>
    /// <returns>单元格的值</returns>
    public object ReadValue(int rowIndex, int columnIndex, bool? isDateTime = null)
    {
        try
        {
            ICell cell = Book.GetSheetAt(sheetID).GetRow(rowIndex).GetCell(columnIndex);
            short df = cell.CellStyle.DataFormat;

            //return cell.ToString();
            switch (cell.CellType)
            {
                case CellType.BLANK:
                    return null;
                case CellType.BOOLEAN:
                    return cell.BooleanCellValue;
                case CellType.ERROR:
                    throw new Exception("Cell Value Error");
                case CellType.FORMULA:
                    {
                        switch (cell.CachedFormulaResultType)
                        {
                            case CellType.BLANK:
                                return "";
                            case CellType.BOOLEAN:
                                return cell.BooleanCellValue;
                            case CellType.ERROR:
                                throw new Exception("Cell Value Error");
                            case CellType.FORMULA:
                                throw new Exception("The formula of this cell is too complex!");
                            case CellType.NUMERIC:
                                if (isDateTime == null)
                                {
                                    if (DateUtil.IsCellDateFormatted(cell))
                                    {
                                        return cell.DateCellValue;
                                    }
                                    else
                                    {
                                        return cell.NumericCellValue;
                                    }
                                }
                                else if (isDateTime == true)
                                {
                                    return cell.DateCellValue;
                                }
                                else
                                {
                                    return cell.NumericCellValue;
                                }
                            case CellType.STRING:
                                return cell.StringCellValue;
                            case CellType.Unknown:
                                return cell.ToString();
                            default:
                                return cell.ToString();
                        }
                    }
                case CellType.NUMERIC:
                    {
                        if (isDateTime == null)
                        {
                            if (DateUtil.IsCellDateFormatted(cell))
                            {
                                return cell.DateCellValue;
                            }
                            else
                            {
                                return cell.NumericCellValue;
                            }
                        }
                        else if (isDateTime == true)
                        {
                            return cell.DateCellValue;
                        }
                        else
                        {
                            return cell.NumericCellValue;
                        }
                    }
                case CellType.STRING:
                    return cell.StringCellValue;
                case CellType.Unknown:
                    return cell.ToString();
                default:
                    return cell.ToString();
            }
        }
        catch (System.NullReferenceException)
        {
            return null;
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

    /// <summary>
    /// 设置单元格的值
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="columnIndex">列号</param>
    /// <param name="value">单元格的值</param>
    public void SetValue(int rowIndex, int columnIndex, object value)
    {
        SetValue(rowIndex, columnIndex, value, false);
    }

    /// <summary>
    /// 设置单元格的值
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="columnIndex">列号</param>
    /// <param name="value">单元格的值</param>
    /// <param name="isFormula">是不是公式</param>
    public void SetValue(int rowIndex, int columnIndex, object value, bool isFormula)
    {
        IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
        if (row == null)
        {
            row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
        }
        ICell cell = row.GetCell(columnIndex);
        if (cell == null)
        {
            cell = row.CreateCell(columnIndex);
        }
        if (value == null)
        {
            cell.SetCellValue("");
        }
        if (isFormula)
        {
            cell.SetCellFormula(value.ToString());
        }
        else
        {
            if (value is short)
            {
                cell.SetCellValue((short)value);
            }
            else if (value is int)
            {
                cell.SetCellValue((int)value);
            }
            else if (value is long)
            {
                cell.SetCellValue((long)value);
            }
            else if (value is float)
            {
                cell.SetCellValue((float)value);
            }
            else if (value is double)
            {
                cell.SetCellValue((double)value);
            }
            else if (value is bool)
            {
                cell.SetCellValue((bool)value);
            }
            else if (value is DateTime)
            {
                cell.SetCellValue((DateTime)value);
            }
            else if (value == null)
            {
            }
            else
            {
                cell.SetCellValue(value.ToString());
            }
        }

    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="type">验证类型</param>
    /// <param name="operatorType">验证方式</param>
    /// <param name="minValue">最小值</param>
    /// <param name="maxValue">最大值</param>
    public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, NPOIDataType type, OperatorTypes operatorType, string minValue, string maxValue)
    {
        SetValueRange(startRowIndex, EndRowIndex, startColInex, endColIndex, type, operatorType, minValue, maxValue, "", "");
    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="type">验证类型</param>
    /// <param name="operatorType">验证方式</param>
    /// <param name="minValue">最小值</param>
    /// <param name="maxValue">最大值</param>
    /// <param name="formate">数据格式</param>
    public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, NPOIDataType type, OperatorTypes operatorType, string minValue, string maxValue, string formate)
    {
        SetValueRange(startRowIndex, EndRowIndex, startColInex, endColIndex, type, operatorType, minValue, maxValue, formate, "");
    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="type">验证类型</param>
    /// <param name="operatorType">验证方式</param>
    /// <param name="minValue">最小值</param>
    /// <param name="maxValue">最大值</param>
    /// <param name="formate">数据格式</param>
    /// <param name="AlertMassage">报错信息</param>
    public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, NPOIDataType type, OperatorTypes operatorType, string minValue, string maxValue, string formate, string AlertMassage)
    {
        CellRangeAddressList regions = new CellRangeAddressList(startRowIndex, EndRowIndex, startColInex, endColIndex);
        DVConstraint constraint = DVConstraint.CreateNumericConstraint(ValidationType.ANY, 0, null, null);
        switch (type)
        {
            case NPOIDataType.Integer:
                constraint = DVConstraint.CreateNumericConstraint(ValidationType.INTEGER, (int)operatorType, minValue, maxValue);
                break;
            case NPOIDataType.Float:
                constraint = DVConstraint.CreateNumericConstraint(ValidationType.DECIMAL, (int)operatorType, minValue, maxValue);
                break;
            case NPOIDataType.Date:
                if (formate == "")
                {
                    formate = "yyyy/MM/dd";
                }
                constraint = DVConstraint.CreateDateConstraint((int)operatorType, minValue, maxValue, formate);
                break;
            case NPOIDataType.Time:
                constraint = DVConstraint.CreateTimeConstraint((int)operatorType, minValue, maxValue);
                break;
            case NPOIDataType.TextLength:
                constraint = DVConstraint.CreateNumericConstraint(ValidationType.TEXT_LENGTH, (int)operatorType, minValue, maxValue);
                break;
            default:
                break;
        }

        HSSFDataValidation dataValidate1 = new HSSFDataValidation(regions, constraint);
        if (!string.IsNullOrEmpty(AlertMassage))
        {
            dataValidate1.CreateErrorBox("Error", AlertMassage);
        }
        ActiveSheet.AddValidationData(dataValidate1);

    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="dataRange">值系列</param>
    public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, string[] dataRange)
    {

        SetValueRange(startRowIndex, EndRowIndex, startColInex, endColIndex, dataRange, "");
    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="dataRange">值系列</param>
    /// <param name="alertMassage">报错信息</param>
    public void SetValueRange(int startRowIndex, int endRowIndex, int startColInex, int endColIndex, string[] dataRange, string alertMassage)
    {
        ISheetConditionalFormatting hscf = ActiveSheet.SheetConditionalFormatting;
        CellRangeAddress[] regions = {
                new CellRangeAddress(startRowIndex, endRowIndex,startColInex,endColIndex)
            };

        CellRangeAddressList rangeList = new CellRangeAddressList();
        rangeList.AddCellRangeAddress(new CellRangeAddress(startRowIndex, endRowIndex, startColInex, endColIndex));
        DVConstraint dvconstraint = DVConstraint.CreateExplicitListConstraint(dataRange);
        HSSFDataValidation dataValidation = new HSSFDataValidation(rangeList, dvconstraint);

        if (!string.IsNullOrEmpty(alertMassage))
        {
            dataValidation.CreateErrorBox("Error", alertMassage);
        }

        ActiveSheet.AddValidationData(dataValidation);
    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="formula">计算公式</param>
    /// <param name="alertMassage">报错信息</param>
    public void SetValueRange(int startRowIndex, int endRowIndex, int startColInex, int endColIndex, string formula, string alertMassage)
    {
        ISheetConditionalFormatting hscf = ActiveSheet.SheetConditionalFormatting;
        CellRangeAddress[] regions = {
                new CellRangeAddress(startRowIndex, endRowIndex,startColInex,endColIndex)
            };

        CellRangeAddressList rangeList = new CellRangeAddressList();
        rangeList.AddCellRangeAddress(new CellRangeAddress(startRowIndex, endRowIndex, startColInex, endColIndex));
        DVConstraint dvconstraint = DVConstraint.CreateFormulaListConstraint(formula);
        HSSFDataValidation dataValidation = new HSSFDataValidation(rangeList, dvconstraint);

        if (!string.IsNullOrEmpty(alertMassage))
        {
            dataValidation.CreateErrorBox("Error", alertMassage);
        }

        ActiveSheet.AddValidationData(dataValidation);
    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="formula">计算公式</param>
    public void SetValueRange(int startRowIndex, int endRowIndex, int startColInex, int endColIndex, string formula)
    {
        SetValueRange(startRowIndex, endColIndex, startRowIndex, endColIndex, formula, "");
    }

    /// <summary>
    /// 生成单元格样式
    /// </summary>
    /// <returns>与当前Excel相关的单元格样式</returns>
    public ICellStyle CreateCellStyle()
    {
        return Book.CreateCellStyle();
    }

    /// <summary>
    /// 生成字体
    /// </summary>
    /// <returns>与当前Excel相关的字体</returns>
    public IFont CreateFont()
    {
        return Book.CreateFont();
    }

    /// <summary>
    /// 设置单元格样式
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="columnIndex">列号</param>
    /// <param name="style">样式</param>
    public void SetStyle(int rowIndex, int columnIndex, ICellStyle style)
    {
        IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
        if (row == null)
        {
            row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
        }
        ICell cell = row.GetCell(columnIndex);
        if (cell == null)
        {
            cell = row.CreateCell(columnIndex);
        }
        cell.CellStyle = style;
    }

    /// <summary>
    /// 合并单元格
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行号</param>
    /// <param name="startColumnIndex">开始列号</param>
    /// <param name="endRowIndex">结束行号</param>
    /// <param name="endColumnIndex">结束列号</param>
    public void MergeCells(int startRowIndex, int startColumnIndex, int endRowIndex, int endColumnIndex)
    {
        int index = Book.GetSheetAt(sheetID).AddMergedRegion(new CellRangeAddress(startRowIndex, endRowIndex, startColumnIndex, endColumnIndex));
    }

    /// <summary>
    /// 拆分单元格
    /// 注1:只对当前ActiveSheet有效
    /// 注2:只有合并的单元格才能拆分
    /// </summary>
    /// <param name="startRowIndex">开始行号</param>
    /// <param name="startColumnIndex">开始列号</param>
    public void UnMergeCells(int startRowIndex, int startColumnIndex)
    {
        int merges = Book.GetSheetAt(sheetID).NumMergedRegions;
        CellRangeAddress merge;
        for (int i = 0; i < merges; i++)
        {
            merge = Book.GetSheetAt(sheetID).GetMergedRegion(i);
            if (merge.FirstRow == startRowIndex && merge.FirstColumn == startColumnIndex)
            {
                Book.GetSheetAt(sheetID).RemoveMergedRegion(i);
                break;
            }
        }
    }

    /// <summary>
    /// 保存到文件
    /// 注:有模板的,文件扩展名与模板同样;没有模板的,文件扩展名为“.xls”;
    /// </summary>
    /// <param name="fileName">保存文件名</param>
    public void Save(string fileName)
    {
        FileStream file = new FileStream(fileName, FileMode.Create);
        Book.Write(file);
        file.Close();
    }

    /// <summary>
    /// 保存到流
    /// 注:保存或下载时,有模板的,文件扩展名与模板同样;没有模板的,文件扩展名为“.xls”;
    /// </summary>
    /// <returns>内存流</returns>
    public MemoryStream Save()
    {
        MemoryStream ms = new MemoryStream();
        Book.Write(ms);
        return ms;
    }

    /// <summary>
    /// 把Excel读成DataSet
    /// 注:必须是正规表格式
    /// </summary>
    /// <returns>读出的Excel</returns>
    public DataSet ReadAsDataSet()
    {
        DataSet rtn = new DataSet();
        for (int i = 0; i < SheetCount; i++)
        {
            ISheet sheet = Book.GetSheetAt(i);
            rtn.Tables.Add(GetDataTableBySheet(sheet));
        }
        return rtn;
    }

    private DataTable GetDataTableBySheet(ISheet sheet)
    {
        DataTable dt = new DataTable(sheet.SheetName);
        int maxCols = 0;
        object value;
        while ((value = ReadValue(sheet, 0, maxCols)) != null)
        {
            dt.Columns.Add(value.ToString());
            maxCols++;
        }

        int row = 1;

        bool emptyRow = false;
        int emptyRowCount = 0;
        while (emptyRowCount < 10)
        {
            emptyRow = true;
            DataRow dr = dt.NewRow();
            for (int i = 0; i < maxCols; i++)
            {
                value = ReadValue(sheet, row, i);
                if (value != null)
                {
                    dr[i] = value;
                    emptyRow = false;
                }
            }
            if (!emptyRow)
            {
                dt.Rows.Add(dr);
                emptyRowCount = 0;
            }
            else
            {
                emptyRowCount++;
            }
            row++;
        }

        return dt;
    }

    /// <summary>
    /// 根据SheetName导出数据为DataTable
    /// </summary>
    /// <param name="sheetName">Sheet名称</param>
    /// <returns></returns>
    public DataTable GetDataTableBySheet(string sheetName)
    {

        ISheet sheet = Book.GetSheet(sheetName);
        if (sheet != null)
        {
            return GetDataTableBySheet(sheet);
        }
        return null;

    }

    /// <summary>
    /// 根据SheetName导出数据为DataTable
    /// </summary>
    /// <param name="sheetIndex">Sheet编号</param>
    /// <returns></returns>
    public DataTable GetDataTableBySheet(int sheetIndex)
    {

        ISheet sheet = Book.GetSheetAt(sheetIndex);
        if (sheet != null)
        {
            return GetDataTableBySheet(sheet);
        }
        return null;

    }

    /// <summary>
    /// 写入表格
    /// </summary>
    /// <param name="Data">表格数据</param>
    /// <param name="col">写入的起始列</param>
    /// <param name="row">写入的起始行</param>
    /// <param name="titleColor">标题颜色</param>
    /// <param name="fullBorder">是否须要四周边框</param>
    public void WriteDataTable(DataTable Data, int col = 1, int row = 1, short? titleColor = null, bool fullBorder = true)
    {
        if (Data == null)
        {
            return;
        }

        var titleStyle = CreateCellStyle();
        var rowStyle = CreateCellStyle();
        if (titleColor != null)
            titleStyle.FillForegroundColor = titleColor.Value;

        titleStyle.FillPattern = FillPatternType.SOLID_FOREGROUND;
        if (fullBorder)
        {
            titleStyle.BorderBottom = BorderStyle.THIN;
            titleStyle.BorderLeft = BorderStyle.THIN;
            titleStyle.BorderRight = BorderStyle.THIN;
            titleStyle.BorderTop = BorderStyle.THIN;
            titleStyle.BottomBorderColor = NPOIColor.BLACK;
            titleStyle.LeftBorderColor = NPOIColor.BLACK;
            titleStyle.RightBorderColor = NPOIColor.BLACK;
            titleStyle.TopBorderColor = NPOIColor.BLACK;
            rowStyle.BorderBottom = BorderStyle.THIN;
            rowStyle.BorderLeft = BorderStyle.THIN;
            rowStyle.BorderRight = BorderStyle.THIN;
            rowStyle.BorderTop = BorderStyle.THIN;
            rowStyle.BottomBorderColor = NPOIColor.BLACK;
            rowStyle.LeftBorderColor = NPOIColor.BLACK;
            rowStyle.RightBorderColor = NPOIColor.BLACK;
            rowStyle.TopBorderColor = NPOIColor.BLACK;
        }

        int iCol = 0, iRow = 1;

        foreach (DataColumn dc in Data.Columns)
        {
            SetValue(row, col + iCol, dc.ColumnName);
            SetStyle(row, col + iCol, titleStyle);
            iCol++;
        }

        rowStyle.FillForegroundColor = NPOIColor.WHITE;

        foreach (DataRow dr in Data.Rows)
        {
            iCol = 0;
            foreach (DataColumn dc in Data.Columns)
            {
                SetValue(row + iRow, col + iCol, dr[dc]);
                SetStyle(row + iRow, col + iCol, rowStyle);
                iCol++;
            }
            iRow++;
        }

        for (int i = 0; i < iCol; i++)
        {
            this.AutoColWidth(i);
        }
    }

    /// <summary>
    /// 读取单元格的值
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="columnIndex">列号</param>
    /// <returns>单元格的值</returns>
    public object ReadValue(ISheet sheet, int rowIndex, int columnIndex, bool? isDateTime = null)
    {
        try
        {
            ICell cell = sheet.GetRow(rowIndex).GetCell(columnIndex);
            short df = cell.CellStyle.DataFormat;

            //return cell.ToString();
            switch (cell.CellType)
            {
                case CellType.BLANK:
                    return null;
                case CellType.BOOLEAN:
                    return cell.BooleanCellValue;
                case CellType.ERROR:
                    throw new Exception("Cell Value Error");
                case CellType.FORMULA:
                    {
                        switch (cell.CachedFormulaResultType)
                        {
                            case CellType.BLANK:
                                return "";
                            case CellType.BOOLEAN:
                                return cell.BooleanCellValue;
                            case CellType.ERROR:
                                throw new Exception("Cell Value Error");
                            case CellType.FORMULA:
                                throw new Exception("The formula of this cell is too complex!");
                            case CellType.NUMERIC:
                                if (isDateTime == null)
                                {
                                    if (DateUtil.IsCellDateFormatted(cell))
                                    {
                                        return cell.DateCellValue;
                                    }
                                    else
                                    {
                                        return cell.NumericCellValue;
                                    }
                                }
                                else if (isDateTime == true)
                                {
                                    return cell.DateCellValue;
                                }
                                else
                                {
                                    return cell.NumericCellValue;
                                }
                            case CellType.STRING:
                                return cell.StringCellValue;
                            case CellType.Unknown:
                                return cell.ToString();
                            default:
                                return cell.ToString();
                        }
                    }
                case CellType.NUMERIC:
                    {
                        if (isDateTime == null)
                        {
                            if (DateUtil.IsCellDateFormatted(cell))
                            {
                                return cell.DateCellValue;
                            }
                            else
                            {
                                return cell.NumericCellValue;
                            }
                        }
                        else if (isDateTime == true)
                        {
                            return cell.DateCellValue;
                        }
                        else
                        {
                            return cell.NumericCellValue;
                        }
                    }
                case CellType.STRING:
                    return cell.StringCellValue;
                case CellType.Unknown:
                    return cell.ToString();
                default:
                    return cell.ToString();
            }
        }
        catch (System.NullReferenceException)
        {
            return null;
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

    public int SheetCount
    {
        get
        {
            return Book.NumberOfSheets;
        }
    }

    public string GetSheetName(int index)
    {
        return Book.GetSheetName(index);
    }

    public void AddPicture(byte[] data, int row, int col)
    {
        int picIndex = Book.AddPicture(data, PictureType.PNG);

        IDrawing draw = ActiveSheet.CreateDrawingPatriarch();

        IClientAnchor anchor = draw.CreateAnchor(0, 0, 255, 255, col, row, col + 5, col + 5);
        IPicture pic = draw.CreatePicture(anchor, picIndex);
        pic.Resize();
    }
}

public enum OperatorTypes
{
    /// <summary>
    /// 介于最大值与小值之间
    /// </summary>
    BETWEEN = OperatorType.BETWEEN,
    /// <summary>
    /// 等于最小值
    /// </summary>
    EQUAL = OperatorType.EQUAL,
    /// <summary>
    /// 大于或等于最小值
    /// </summary>
    GREATER_OR_EQUAL = OperatorType.GREATER_OR_EQUAL,
    /// <summary>
    /// 大于最小值
    /// </summary>
    GREATER_THAN = OperatorType.GREATER_THAN,
    /// <summary>
    /// 忽略
    /// </summary>
    NO_COMPARISON = OperatorType.IGNORED,
    /// <summary>
    /// 小于或等于最小值
    /// </summary>
    LESS_OR_EQUAL = OperatorType.LESS_OR_EQUAL,
    /// <summary>
    /// 小于最小值
    /// </summary>
    LESS_THAN = OperatorType.LESS_THAN,
    /// <summary>
    /// 不在最小值与最大值之间
    /// </summary>
    NOT_BETWEEN = OperatorType.NOT_BETWEEN,
    /// <summary>
    /// 不等于最小值
    /// </summary>
    NOT_EQUAL = OperatorType.NOT_EQUAL
}

public enum NPOIDataType
{
    /// <summary>
    /// 验证整数
    /// </summary>
    Integer,
    /// <summary>
    /// 验证符点数
    /// </summary>
    Float,
    /// <summary>
    /// 验证日期
    /// </summary>
    Date,
    /// <summary>
    /// 验证时间
    /// </summary>
    Time,
    /// <summary>
    /// 验证字符长度
    /// </summary>
    TextLength
}

public static class NPOIColor
{

    /// <summary>
    /// 红色
    /// </summary>
    public static short RED { get { return NPOI.HSSF.Util.HSSFColor.RED.index; } }

    /// <summary>
    /// 蓝色
    /// </summary>
    public static short BLUE { get { return NPOI.HSSF.Util.HSSFColor.BLUE.index; } }

    /// <summary>
    /// 浅绿色
    /// </summary>
    public static short AQUA { get { return NPOI.HSSF.Util.HSSFColor.AQUA.index; } }

    /// <summary>
    /// 自动
    /// </summary>
    public static short AUTOMATIC { get { return NPOI.HSSF.Util.HSSFColor.AUTOMATIC.index; } }

    /// <summary>
    /// 黑色
    /// </summary>
    public static short BLACK { get { return NPOI.HSSF.Util.HSSFColor.BLACK.index; } }

    /// <summary>
    /// 蓝灰色
    /// </summary>
    public static short BLUE_GREY { get { return NPOI.HSSF.Util.HSSFColor.BLUE_GREY.index; } }

    /// <summary>
    /// 明绿色
    /// </summary>
    public static short BRIGHT_GREEN { get { return NPOI.HSSF.Util.HSSFColor.BRIGHT_GREEN.index; } }

    /// <summary>
    /// 棕色
    /// </summary>
    public static short BROWN { get { return NPOI.HSSF.Util.HSSFColor.BROWN.index; } }

    /// <summary>
    /// 正常
    /// </summary>
    public static short COLOR_NORMAL { get { return NPOI.HSSF.Util.HSSFColor.COLOR_NORMAL; } }

    /// <summary>
    /// 珊瑚色
    /// </summary>
    public static short CORAL { get { return NPOI.HSSF.Util.HSSFColor.CORAL.index; } }

    /// <summary>
    /// 亮蓝色
    /// </summary>
    public static short CORNFLOWER_BLUE { get { return NPOI.HSSF.Util.HSSFColor.CORNFLOWER_BLUE.index; } }

    /// <summary>
    /// 深蓝色
    /// </summary>
    public static short DARK_BLUE { get { return NPOI.HSSF.Util.HSSFColor.DARK_BLUE.index; } }

    /// <summary>
    /// 深绿色
    /// </summary>
    public static short DARK_GREEN { get { return NPOI.HSSF.Util.HSSFColor.DARK_GREEN.index; } }

    /// <summary>
    /// 深红色
    /// </summary>
    public static short DARK_RED { get { return NPOI.HSSF.Util.HSSFColor.DARK_RED.index; } }

    /// <summary>
    /// 深茶色
    /// </summary>
    public static short DARK_TEAL { get { return NPOI.HSSF.Util.HSSFColor.DARK_TEAL.index; } }

    /// <summary>
    /// 深黄
    /// </summary>
    public static short DARK_YELLOW { get { return NPOI.HSSF.Util.HSSFColor.DARK_YELLOW.index; } }

    /// <summary>
    /// 金色
    /// </summary>
    public static short GOLD { get { return NPOI.HSSF.Util.HSSFColor.GOLD.index; } }

    /// <summary>
    /// 绿色
    /// </summary>
    public static short GREEN { get { return NPOI.HSSF.Util.HSSFColor.GREEN.index; } }

    /// <summary>
    /// 25%灰色
    /// </summary>
    public static short GREY_25_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.GREY_25_PERCENT.index; } }

    /// <summary>
    /// 40%灰色
    /// </summary>
    public static short GREY_40_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.GREY_40_PERCENT.index; } }

    /// <summary>
    /// 50%灰色
    /// </summary>
    public static short GREY_50_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.GREY_50_PERCENT.index; } }

    /// <summary>
    /// 80%灰色
    /// </summary>
    public static short GREY_80_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.GREY_80_PERCENT.index; } }

    /// <summary>
    /// 靛蓝色
    /// </summary>
    public static short INDIGO { get { return NPOI.HSSF.Util.HSSFColor.INDIGO.index; } }

    /// <summary>
    /// 淡紫色
    /// </summary>
    public static short LAVENDER { get { return NPOI.HSSF.Util.HSSFColor.LAVENDER.index; } }

    /// <summary>
    /// 粉黄色
    /// </summary>
    public static short LEMON_CHIFFON { get { return NPOI.HSSF.Util.HSSFColor.LEMON_CHIFFON.index; } }

    /// <summary>
    /// 淡蓝色
    /// </summary>
    public static short LIGHT_BLUE { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_BLUE.index; } }

    /// <summary>
    /// 淡亮蓝色
    /// </summary>
    public static short LIGHT_CORNFLOWER_BLUE { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_CORNFLOWER_BLUE.index; } }

    /// <summary>
    /// 淡绿色
    /// </summary>
    public static short LIGHT_GREEN { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_GREEN.index; } }

    /// <summary>
    /// 淡桔黄色
    /// </summary>
    public static short LIGHT_ORANGE { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_ORANGE.index; } }

    /// <summary>
    /// 淡蓝绿色
    /// </summary>
    public static short LIGHT_TURQUOISE { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_TURQUOISE.index; } }

    /// <summary>
    /// 淡黄色
    /// </summary>
    public static short LIGHT_YELLOW { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_YELLOW.index; } }

    /// <summary>
    /// 绿黄色
    /// </summary>
    public static short LIME { get { return NPOI.HSSF.Util.HSSFColor.LIME.index; } }

    /// <summary>
    /// 栗色
    /// </summary>
    public static short MAROON { get { return NPOI.HSSF.Util.HSSFColor.MAROON.index; } }

    /// <summary>
    /// 橄榄绿色
    /// </summary>
    public static short OLIVE_GREEN { get { return NPOI.HSSF.Util.HSSFColor.OLIVE_GREEN.index; } }

    /// <summary>
    /// 桔色
    /// </summary>
    public static short ORANGE { get { return NPOI.HSSF.Util.HSSFColor.ORANGE.index; } }

    /// <summary>
    /// 白灰蓝色
    /// </summary>
    public static short PALE_BLUE { get { return NPOI.HSSF.Util.HSSFColor.PALE_BLUE.index; } }

    /// <summary>
    /// 粉红色
    /// </summary>
    public static short PINK { get { return NPOI.HSSF.Util.HSSFColor.PINK.index; } }

    /// <summary>
    /// 紫红色
    /// </summary>
    public static short PLUM { get { return NPOI.HSSF.Util.HSSFColor.PLUM.index; } }

    /// <summary>
    /// 玫瑰红色
    /// </summary>
    public static short ROSE { get { return NPOI.HSSF.Util.HSSFColor.ROSE.index; } }

    /// <summary>
    /// 高贵蓝
    /// </summary>
    public static short ROYAL_BLUE { get { return NPOI.HSSF.Util.HSSFColor.ROYAL_BLUE.index; } }

    /// <summary>
    /// 海绿色
    /// </summary>
    public static short SEA_GREEN { get { return NPOI.HSSF.Util.HSSFColor.SEA_GREEN.index; } }

    /// <summary>
    /// 天空蓝
    /// </summary>
    public static short SKY_BLUE { get { return NPOI.HSSF.Util.HSSFColor.SKY_BLUE.index; } }

    /// <summary>
    /// 棕褐色
    /// </summary>
    public static short TAN { get { return NPOI.HSSF.Util.HSSFColor.TAN.index; } }

    /// <summary>
    /// 茶色
    /// </summary>
    public static short TEAL { get { return NPOI.HSSF.Util.HSSFColor.TEAL.index; } }

    /// <summary>
    /// 蓝绿色
    /// </summary>
    public static short TURQUOISE { get { return NPOI.HSSF.Util.HSSFColor.TURQUOISE.index; } }

    /// <summary>
    /// 紫色
    /// </summary>
    public static short VIOLET { get { return NPOI.HSSF.Util.HSSFColor.VIOLET.index; } }

    /// <summary>
    /// 白色
    /// </summary>
    public static short WHITE { get { return NPOI.HSSF.Util.HSSFColor.WHITE.index; } }

    /// <summary>
    /// 黄色
    /// </summary>
    public static short YELLOW { get { return NPOI.HSSF.Util.HSSFColor.YELLOW.index; } }

}

/// <summary>
/// 针对excel的Oledb
/// </summary>
public class OleDbExcel
{
    /// <summary>
    /// OLEDB链接
    /// </summary>
    public OleDbConnection Connection
    {
        get;
        set;
    }

    /// <summary>
    /// 用Oledb对Excel进行操做
    /// 注:必须是标准表形式Excel内容
    /// </summary>
    /// <param name="excelFile">Excel文件</param>
    public OleDbExcel(string excelFile)
    {
        string conStr = string.Empty;
        FileInfo file = new FileInfo(excelFile);
        if (!file.Exists) { throw new Exception("文件不存在"); }
        string extension = file.Extension;
        switch (extension)
        {
            case ".xls":
                conStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelFile + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'";
                break;
            case ".xlsx":
                conStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excelFile + ";Extended Properties='Excel 12.0;HDR=Yes;IMEX=1;'";
                break;
            default:
                conStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelFile + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'";
                break;
        }

        //连接Excel
        Connection = new OleDbConnection(conStr);
    }

    private List<string> tableNames;

    /// <summary>
    /// 获取Excel内的Sheet名称
    /// </summary>
    public List<string> Sheets
    {
        get
        {
            if (tableNames == null)
            {
                try
                {
                    tableNames = new List<string>();
                    //读取Excel里面的sheet名
                    Connection.Open();

                    DataTable schemaTable = Connection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });

                    for (int i = 0; i < schemaTable.Rows.Count; i++)
                    {
                        DataRow dr = schemaTable.Rows[i];
                        string tbName = dr["table_name"].ToString();
                        if (tbName[tbName.Length - 1] == '$')
                        {
                            tableNames.Add(tbName);
                        }
                    }
                    Connection.Close();
                }
                catch (Exception ex)
                {
                    if (Connection.State != ConnectionState.Closed)
                    {
                        Connection.Close();
                    }
                    throw new Exception(ex.Message, ex);
                }
            }
            return tableNames;
        }
    }

    /// <summary>
    /// 查询出全部数据
    /// </summary>
    /// <param name="tableName">Sheet名称</param>
    /// <returns>sheet内的全部数据</returns>
    public DataSet QueryAll(string tableName)
    {
        try
        {
            DataSet excelData = new DataSet();
            OleDbDataAdapter adapter = new OleDbDataAdapter();
            adapter.SelectCommand = new OleDbCommand();
            adapter.SelectCommand.Connection = Connection;
            adapter.SelectCommand.CommandText = string.Format("SELECT * FROM {0}", "[" + tableName + "]");
            adapter.Fill(excelData);
            return excelData;
        }
        catch (Exception ex)
        {
            if (Connection.State != ConnectionState.Closed)
            {
                Connection.Close();
            }
            throw new Exception(ex.Message, ex);
        }
    }

    /// <summary>
    /// 查询出全部数据
    /// </summary>
    /// <param name="tableIndex">Sheet序号(从0开始)</param>
    /// <returns>sheet内的全部数据</returns>
    public DataSet QueryAll(int tableIndex)
    {
        return QueryAll(Sheets[tableIndex]);
    }

    /// <summary>
    /// 利用Sql进行查询
    /// </summary>
    /// <param name="sql">Sql语句</param>
    /// <returns>查询出的数据</returns>
    public DataSet Query(string sql)
    {
        try
        {
            DataSet excelData = new DataSet();
            OleDbDataAdapter adapter = new OleDbDataAdapter(sql, Connection);
            adapter.Fill(excelData);
            return excelData;
        }
        catch (Exception ex)
        {
            if (Connection.State != ConnectionState.Closed)
            {
                Connection.Close();
            }
            throw new Exception(ex.Message, ex);
        }
    }

    /// <summary>
    /// 利用Sql进行查询
    /// </summary>
    /// <param name="sql">Sql语句</param>
    /// <param name="param">查询参数</param>
    /// <returns>查询出的数据</returns>
    public DataSet Query(string sql, params OleDbParameter[] param)
    {
        try
        {
            DataSet excelData = new DataSet();
            OleDbDataAdapter adapter = new OleDbDataAdapter(sql, Connection);
            adapter.SelectCommand.Parameters.AddRange(param);
            adapter.Fill(excelData);
            return excelData;
        }
        catch (Exception ex)
        {
            if (Connection.State != ConnectionState.Closed)
            {
                Connection.Close();
            }
            throw new Exception(ex.Message, ex);
        }
    }

    /// <summary>
    /// 利用Sql进行数据操做
    /// </summary>
    /// <param name="sql">sql语句</param>
    /// <returns>影响的行数</returns>
    public int ExecuteSql(string sql)
    {
        try
        {
            Connection.Open();
            OleDbCommand cmd = Connection.CreateCommand();
            cmd.CommandText = sql;
            int rtn = cmd.ExecuteNonQuery();
            Connection.Close();
            return rtn;
        }
        catch (Exception ex)
        {
            if (Connection.State != ConnectionState.Closed)
            {
                Connection.Close();
            }
            throw new Exception(ex.Message, ex);
        }
    }

    /// <summary>
    /// 利用Sql进行数据操做
    /// </summary>
    /// <param name="sql">sql语句</param>
    /// <param name="param">执行参数</param>
    /// <returns>影响的行数</returns>
    public int ExecuteSql(string sql, params OleDbParameter[] param)
    {
        try
        {
            Connection.Open();
            OleDbCommand cmd = Connection.CreateCommand();
            cmd.CommandText = sql;
            cmd.Parameters.AddRange(param);
            int rtn = cmd.ExecuteNonQuery();
            Connection.Close();
            return rtn;
        }
        catch (Exception ex)
        {
            if (Connection.State != ConnectionState.Closed)
            {
                Connection.Close();
            }
            throw new Exception(ex.Message, ex);
        }
    }
}
View Code
 
  

三、使用
前台调用 传入参数,获取数据
[HttpPost]
public string PPKExport(string id)
{
var
ProductInfo = "";
var avgWeightStr = "";
var DivWeightStr = "";
int[][] dataArray = new int[8][];
string templateFile = "~/ExcelTemp/PPKTemplate.xls";      //模板位置
 ex = new ExportExcel(Server.MapPath(templateFile));
 string fileName = "Xbar-R控制图.xls";                      //导出的excel命名
 ex.PPKToExcel(ProductInfo,avgWeightStr, DivWeightStr, dataArray, fileName);     //传入参数
  return fileName;
}
 
  

 四、效果

界面导出按钮javascript

点击导出按钮,选择位置保存便可。html

2、将界面table里的内容直接生成excel

一、操做excel的NPOI工具类java

using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.OleDb;
using System.IO;
using System.Drawing;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using NPOI.HSSF.Util;
using NPOI.SS.Util;

public class NPOIExcel
{
    internal IWorkbook Book { get; set; }

    private int sheetID = 0;
    /// <summary>
    /// 当前活动的SheetID,全部的操做将指向这个Sheet
    /// </summary>
    public int ActiveSheetID
    {
        get
        {
            return sheetID;
        }
        set
        {
            sheetID = value;
        }
    }

    /// <summary>
    /// 当前活动的SheetName,全部的操做将指向这个Sheet
    /// </summary>
    public string ActiveSheetName
    {
        get
        {
            return Book.GetSheetAt(sheetID).SheetName;
        }
        set
        {
            sheetID = Book.GetSheetIndex(value);
        }
    }
    /// <summary>
    /// 当前活动的Sheet,全部的操做将指向这个Sheet
    /// </summary>
    public ISheet ActiveSheet
    {
        get
        {
            return Book.GetSheetAt(sheetID);
        }
    }

    /// <summary>
    /// 第一行非空行的行号
    /// </summary>
    public int FirstRowNum
    {
        get
        {
            return Book.GetSheetAt(sheetID).FirstRowNum;
        }
    }

    /// <summary>
    /// 最后一行非空行的行号
    /// </summary>
    public int LastRostNum
    {
        get
        {
            return Book.GetSheetAt(sheetID).LastRowNum;
        }
    }

    /// <summary>
    /// 无模板的Excel生成或操做
    /// </summary>
    public NPOIExcel()
    {
        Book = new HSSFWorkbook();
        Book.CreateSheet();
    }

    public NPOIExcel(Stream fileStream, string fileName)
    {
        if (fileName.Substring(fileName.LastIndexOf(".")) == ".xls")
        {
            Book = new HSSFWorkbook(fileStream);
        }
        else
        {
            Book = new XSSFWorkbook(fileStream);
        }
    }
    /// <summary>
    /// 带模板或数据的Excel生成或操做
    /// </summary>
    /// <param name="fileName"></param>
    public NPOIExcel(string fileName)
    {
        Book = CreateBook(fileName);
    }

    /// <summary>
    /// 建立Excel Book
    /// </summary>
    /// <param name="fileName">模板文件名</param>
    /// <returns></returns>
    private IWorkbook CreateBook(string fileName)
    {
        FileInfo file = new FileInfo(fileName);
        if (!file.Exists)
        {
            File.Create(fileName).Close();
        }
        FileStream fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
        IWorkbook book;
        if (file.Extension == ".xls")
        {
            book = new HSSFWorkbook(fs);
        }
        else
        {
            book = new XSSFWorkbook(fs);
        }
        fs.Close();
        if (book.NumberOfSheets == 0)
        {
            book.CreateSheet();
        }
        return book;
    }

    /// <summary>
    /// 新建Sheet
    /// </summary>
    /// <returns>新建Sheet</returns>
    public ISheet CreateSheet()
    {
        return Book.CreateSheet();
    }

    /// <summary>
    /// 新建Sheet
    /// </summary>
    /// <param name="sheetName">新建Sheet的名称</param>
    /// <returns>新建Sheet</returns>
    public ISheet CreateSheet(string sheetName)
    {
        return Book.CreateSheet(sheetName);
    }

    /// <summary>
    /// 设置行高
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="height">高度</param>
    public void SetRowHeight(int rowIndex, float height)
    {
        IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
        if (row == null)
        {
            row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
        }
        row.Height = (short)(height * 20);
    }

    /// <summary>
    /// 设置列宽
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="columnIndex">列号</param>
    /// <param name="width">宽度</param>
    public void SetColumnWidth(int columnIndex, short width)
    {
        Book.GetSheetAt(sheetID).SetColumnWidth(columnIndex, width * 256);
    }

    /// <summary>
    /// 获取或设置默认行高
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    public short DefaultRowHeight
    {
        get
        {
            return (short)(Book.GetSheetAt(sheetID).DefaultRowHeight / 20);
        }
        set
        {
            Book.GetSheetAt(sheetID).DefaultRowHeight = value * 20;
        }
    }

    /// <summary>
    /// 获取或设置默认列宽
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    public int DefaultColWidth
    {
        get
        {
            return Book.GetSheetAt(sheetID).DefaultColumnWidth;
        }
        set
        {
            Book.GetSheetAt(sheetID).DefaultColumnWidth = value;
        }
    }

    /// <summary>
    /// 某一列的列宽自动调整大小
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="colIndex">列号</param>
    public void AutoColWidth(int colIndex)
    {
        Book.GetSheetAt(sheetID).AutoSizeColumn(colIndex, true);
    }

    /// <summary>
    /// 隐藏一行
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    public void HiddenRow(int rowIndex)
    {
        IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
        if (row == null)
        {
            row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
        }
        row.ZeroHeight = true;
    }

    /// <summary>
    /// 删除一行
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    public void RemoveRow(int rowIndex)
    {
        IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
        if (row != null)
        {
            ActiveSheet.RemoveRow(row);
        }
    }

    /// <summary>
    /// 读取单元格的值
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="columnIndex">列号</param>
    /// <returns>单元格的值</returns>
    public object ReadValue(int rowIndex, int columnIndex, bool? isDateTime = null)
    {
        try
        {
            ICell cell = Book.GetSheetAt(sheetID).GetRow(rowIndex).GetCell(columnIndex);
            short df = cell.CellStyle.DataFormat;

            //return cell.ToString();
            switch (cell.CellType)
            {
                case CellType.BLANK:
                    return null;
                case CellType.BOOLEAN:
                    return cell.BooleanCellValue;
                case CellType.ERROR:
                    throw new Exception("Cell Value Error");
                case CellType.FORMULA:
                    {
                        switch (cell.CachedFormulaResultType)
                        {
                            case CellType.BLANK:
                                return "";
                            case CellType.BOOLEAN:
                                return cell.BooleanCellValue;
                            case CellType.ERROR:
                                throw new Exception("Cell Value Error");
                            case CellType.FORMULA:
                                throw new Exception("The formula of this cell is too complex!");
                            case CellType.NUMERIC:
                                if (isDateTime == null)
                                {
                                    if (DateUtil.IsCellDateFormatted(cell))
                                    {
                                        return cell.DateCellValue;
                                    }
                                    else
                                    {
                                        return cell.NumericCellValue;
                                    }
                                }
                                else if (isDateTime == true)
                                {
                                    return cell.DateCellValue;
                                }
                                else
                                {
                                    return cell.NumericCellValue;
                                }
                            case CellType.STRING:
                                return cell.StringCellValue;
                            case CellType.Unknown:
                                return cell.ToString();
                            default:
                                return cell.ToString();
                        }
                    }
                case CellType.NUMERIC:
                    {
                        if (isDateTime == null)
                        {
                            if (DateUtil.IsCellDateFormatted(cell))
                            {
                                return cell.DateCellValue;
                            }
                            else
                            {
                                return cell.NumericCellValue;
                            }
                        }
                        else if (isDateTime == true)
                        {
                            return cell.DateCellValue;
                        }
                        else
                        {
                            return cell.NumericCellValue;
                        }
                    }
                case CellType.STRING:
                    return cell.StringCellValue;
                case CellType.Unknown:
                    return cell.ToString();
                default:
                    return cell.ToString();
            }
        }
        catch (System.NullReferenceException)
        {
            return null;
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

    /// <summary>
    /// 设置单元格的值
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="columnIndex">列号</param>
    /// <param name="value">单元格的值</param>
    public void SetValue(int rowIndex, int columnIndex, object value)
    {
        SetValue(rowIndex, columnIndex, value, false);
    }

    /// <summary>
    /// 设置单元格的值
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="columnIndex">列号</param>
    /// <param name="value">单元格的值</param>
    /// <param name="isFormula">是不是公式</param>
    public void SetValue(int rowIndex, int columnIndex, object value, bool isFormula)
    {
        IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
        if (row == null)
        {
            row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
        }
        ICell cell = row.GetCell(columnIndex);
        if (cell == null)
        {
            cell = row.CreateCell(columnIndex);
        }
        if (value == null)
        {
            cell.SetCellValue("");
        }
        if (isFormula)
        {
            cell.SetCellFormula(value.ToString());
        }
        else
        {
            if (value is short)
            {
                cell.SetCellValue((short)value);
            }
            else if (value is int)
            {
                cell.SetCellValue((int)value);
            }
            else if (value is long)
            {
                cell.SetCellValue((long)value);
            }
            else if (value is float)
            {
                cell.SetCellValue((float)value);
            }
            else if (value is double)
            {
                cell.SetCellValue((double)value);
            }
            else if (value is bool)
            {
                cell.SetCellValue((bool)value);
            }
            else if (value is DateTime)
            {
                cell.SetCellValue((DateTime)value);
            }
            else if (value == null)
            {
            }
            else
            {
                cell.SetCellValue(value.ToString());
            }
        }

    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="type">验证类型</param>
    /// <param name="operatorType">验证方式</param>
    /// <param name="minValue">最小值</param>
    /// <param name="maxValue">最大值</param>
    public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, NPOIDataType type, OperatorTypes operatorType, string minValue, string maxValue)
    {
        SetValueRange(startRowIndex, EndRowIndex, startColInex, endColIndex, type, operatorType, minValue, maxValue, "", "");
    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="type">验证类型</param>
    /// <param name="operatorType">验证方式</param>
    /// <param name="minValue">最小值</param>
    /// <param name="maxValue">最大值</param>
    /// <param name="formate">数据格式</param>
    public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, NPOIDataType type, OperatorTypes operatorType, string minValue, string maxValue, string formate)
    {
        SetValueRange(startRowIndex, EndRowIndex, startColInex, endColIndex, type, operatorType, minValue, maxValue, formate, "");
    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="type">验证类型</param>
    /// <param name="operatorType">验证方式</param>
    /// <param name="minValue">最小值</param>
    /// <param name="maxValue">最大值</param>
    /// <param name="formate">数据格式</param>
    /// <param name="AlertMassage">报错信息</param>
    public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, NPOIDataType type, OperatorTypes operatorType, string minValue, string maxValue, string formate, string AlertMassage)
    {
        CellRangeAddressList regions = new CellRangeAddressList(startRowIndex, EndRowIndex, startColInex, endColIndex);
        DVConstraint constraint = DVConstraint.CreateNumericConstraint(ValidationType.ANY, 0, null, null);
        switch (type)
        {
            case NPOIDataType.Integer:
                constraint = DVConstraint.CreateNumericConstraint(ValidationType.INTEGER, (int)operatorType, minValue, maxValue);
                break;
            case NPOIDataType.Float:
                constraint = DVConstraint.CreateNumericConstraint(ValidationType.DECIMAL, (int)operatorType, minValue, maxValue);
                break;
            case NPOIDataType.Date:
                if (formate == "")
                {
                    formate = "yyyy/MM/dd";
                }
                constraint = DVConstraint.CreateDateConstraint((int)operatorType, minValue, maxValue, formate);
                break;
            case NPOIDataType.Time:
                constraint = DVConstraint.CreateTimeConstraint((int)operatorType, minValue, maxValue);
                break;
            case NPOIDataType.TextLength:
                constraint = DVConstraint.CreateNumericConstraint(ValidationType.TEXT_LENGTH, (int)operatorType, minValue, maxValue);
                break;
            default:
                break;
        }

        HSSFDataValidation dataValidate1 = new HSSFDataValidation(regions, constraint);
        if (!string.IsNullOrEmpty(AlertMassage))
        {
            dataValidate1.CreateErrorBox("Error", AlertMassage);
        }
        ActiveSheet.AddValidationData(dataValidate1);

    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="dataRange">值系列</param>
    public void SetValueRange(int startRowIndex, int EndRowIndex, int startColInex, int endColIndex, string[] dataRange)
    {

        SetValueRange(startRowIndex, EndRowIndex, startColInex, endColIndex, dataRange, "");
    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="dataRange">值系列</param>
    /// <param name="alertMassage">报错信息</param>
    public void SetValueRange(int startRowIndex, int endRowIndex, int startColInex, int endColIndex, string[] dataRange, string alertMassage)
    {
        ISheetConditionalFormatting hscf = ActiveSheet.SheetConditionalFormatting;
        CellRangeAddress[] regions = {
                new CellRangeAddress(startRowIndex, endRowIndex,startColInex,endColIndex)
            };

        CellRangeAddressList rangeList = new CellRangeAddressList();
        rangeList.AddCellRangeAddress(new CellRangeAddress(startRowIndex, endRowIndex, startColInex, endColIndex));
        DVConstraint dvconstraint = DVConstraint.CreateExplicitListConstraint(dataRange);
        HSSFDataValidation dataValidation = new HSSFDataValidation(rangeList, dvconstraint);

        if (!string.IsNullOrEmpty(alertMassage))
        {
            dataValidation.CreateErrorBox("Error", alertMassage);
        }

        ActiveSheet.AddValidationData(dataValidation);
    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="formula">计算公式</param>
    /// <param name="alertMassage">报错信息</param>
    public void SetValueRange(int startRowIndex, int endRowIndex, int startColInex, int endColIndex, string formula, string alertMassage)
    {
        ISheetConditionalFormatting hscf = ActiveSheet.SheetConditionalFormatting;
        CellRangeAddress[] regions = {
                new CellRangeAddress(startRowIndex, endRowIndex,startColInex,endColIndex)
            };

        CellRangeAddressList rangeList = new CellRangeAddressList();
        rangeList.AddCellRangeAddress(new CellRangeAddress(startRowIndex, endRowIndex, startColInex, endColIndex));
        DVConstraint dvconstraint = DVConstraint.CreateFormulaListConstraint(formula);
        HSSFDataValidation dataValidation = new HSSFDataValidation(rangeList, dvconstraint);

        if (!string.IsNullOrEmpty(alertMassage))
        {
            dataValidation.CreateErrorBox("Error", alertMassage);
        }

        ActiveSheet.AddValidationData(dataValidation);
    }

    /// <summary>
    /// 设置一个区域内的单元格的值范围
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行</param>
    /// <param name="EndRowIndex">结束行</param>
    /// <param name="startColInex">开始列</param>
    /// <param name="endColIndex">结束列</param>
    /// <param name="formula">计算公式</param>
    public void SetValueRange(int startRowIndex, int endRowIndex, int startColInex, int endColIndex, string formula)
    {
        SetValueRange(startRowIndex, endColIndex, startRowIndex, endColIndex, formula, "");
    }

    /// <summary>
    /// 生成单元格样式
    /// </summary>
    /// <returns>与当前Excel相关的单元格样式</returns>
    public ICellStyle CreateCellStyle()
    {
        return Book.CreateCellStyle();
    }

    /// <summary>
    /// 生成字体
    /// </summary>
    /// <returns>与当前Excel相关的字体</returns>
    public IFont CreateFont()
    {
        return Book.CreateFont();
    }

    /// <summary>
    /// 设置单元格样式
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="columnIndex">列号</param>
    /// <param name="style">样式</param>
    public void SetStyle(int rowIndex, int columnIndex, ICellStyle style)
    {
        IRow row = Book.GetSheetAt(sheetID).GetRow(rowIndex);
        if (row == null)
        {
            row = Book.GetSheetAt(sheetID).CreateRow(rowIndex);
        }
        ICell cell = row.GetCell(columnIndex);
        if (cell == null)
        {
            cell = row.CreateCell(columnIndex);
        }
        cell.CellStyle = style;
    }

    /// <summary>
    /// 合并单元格
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="startRowIndex">开始行号</param>
    /// <param name="startColumnIndex">开始列号</param>
    /// <param name="endRowIndex">结束行号</param>
    /// <param name="endColumnIndex">结束列号</param>
    public void MergeCells(int startRowIndex, int startColumnIndex, int endRowIndex, int endColumnIndex)
    {
        int index = Book.GetSheetAt(sheetID).AddMergedRegion(new CellRangeAddress(startRowIndex, endRowIndex, startColumnIndex, endColumnIndex));
    }

    /// <summary>
    /// 拆分单元格
    /// 注1:只对当前ActiveSheet有效
    /// 注2:只有合并的单元格才能拆分
    /// </summary>
    /// <param name="startRowIndex">开始行号</param>
    /// <param name="startColumnIndex">开始列号</param>
    public void UnMergeCells(int startRowIndex, int startColumnIndex)
    {
        int merges = Book.GetSheetAt(sheetID).NumMergedRegions;
        CellRangeAddress merge;
        for (int i = 0; i < merges; i++)
        {
            merge = Book.GetSheetAt(sheetID).GetMergedRegion(i);
            if (merge.FirstRow == startRowIndex && merge.FirstColumn == startColumnIndex)
            {
                Book.GetSheetAt(sheetID).RemoveMergedRegion(i);
                break;
            }
        }
    }

    /// <summary>
    /// 保存到文件
    /// 注:有模板的,文件扩展名与模板同样;没有模板的,文件扩展名为“.xls”;
    /// </summary>
    /// <param name="fileName">保存文件名</param>
    public void Save(string fileName)
    {
        FileStream file = new FileStream(fileName, FileMode.Create);
        Book.Write(file);
        file.Close();
    }

    /// <summary>
    /// 保存到流
    /// 注:保存或下载时,有模板的,文件扩展名与模板同样;没有模板的,文件扩展名为“.xls”;
    /// </summary>
    /// <returns>内存流</returns>
    public MemoryStream Save()
    {
        MemoryStream ms = new MemoryStream();
        Book.Write(ms);
        return ms;
    }

    /// <summary>
    /// 把Excel读成DataSet
    /// 注:必须是正规表格式
    /// </summary>
    /// <returns>读出的Excel</returns>
    public DataSet ReadAsDataSet()
    {
        DataSet rtn = new DataSet();
        for (int i = 0; i < SheetCount; i++)
        {
            ISheet sheet = Book.GetSheetAt(i);
            rtn.Tables.Add(GetDataTableBySheet(sheet));
        }
        return rtn;
    }

    private DataTable GetDataTableBySheet(ISheet sheet)
    {
        DataTable dt = new DataTable(sheet.SheetName);
        int maxCols = 0;
        object value;
        while ((value = ReadValue(sheet, 0, maxCols)) != null)
        {
            dt.Columns.Add(value.ToString());
            maxCols++;
        }

        int row = 1;

        bool emptyRow = false;
        int emptyRowCount = 0;
        while (emptyRowCount < 10)
        {
            emptyRow = true;
            DataRow dr = dt.NewRow();
            for (int i = 0; i < maxCols; i++)
            {
                value = ReadValue(sheet, row, i);
                if (value != null)
                {
                    dr[i] = value;
                    emptyRow = false;
                }
            }
            if (!emptyRow)
            {
                dt.Rows.Add(dr);
                emptyRowCount = 0;
            }
            else
            {
                emptyRowCount++;
            }
            row++;
        }

        return dt;
    }

    /// <summary>
    /// 根据SheetName导出数据为DataTable
    /// </summary>
    /// <param name="sheetName">Sheet名称</param>
    /// <returns></returns>
    public DataTable GetDataTableBySheet(string sheetName)
    {

        ISheet sheet = Book.GetSheet(sheetName);
        if (sheet != null)
        {
            return GetDataTableBySheet(sheet);
        }
        return null;

    }

    /// <summary>
    /// 根据SheetName导出数据为DataTable
    /// </summary>
    /// <param name="sheetIndex">Sheet编号</param>
    /// <returns></returns>
    public DataTable GetDataTableBySheet(int sheetIndex)
    {

        ISheet sheet = Book.GetSheetAt(sheetIndex);
        if (sheet != null)
        {
            return GetDataTableBySheet(sheet);
        }
        return null;

    }

    /// <summary>
    /// 写入表格
    /// </summary>
    /// <param name="Data">表格数据</param>
    /// <param name="col">写入的起始列</param>
    /// <param name="row">写入的起始行</param>
    /// <param name="titleColor">标题颜色</param>
    /// <param name="fullBorder">是否须要四周边框</param>
    public void WriteDataTable(DataTable Data, int col = 1, int row = 1, short? titleColor = null, bool fullBorder = true)
    {
        if (Data == null)
        {
            return;
        }

        var titleStyle = CreateCellStyle();
        var rowStyle = CreateCellStyle();
        if (titleColor != null)
            titleStyle.FillForegroundColor = titleColor.Value;

        titleStyle.FillPattern = FillPatternType.SOLID_FOREGROUND;
        if (fullBorder)
        {
            titleStyle.BorderBottom = BorderStyle.THIN;
            titleStyle.BorderLeft = BorderStyle.THIN;
            titleStyle.BorderRight = BorderStyle.THIN;
            titleStyle.BorderTop = BorderStyle.THIN;
            titleStyle.BottomBorderColor = NPOIColor.BLACK;
            titleStyle.LeftBorderColor = NPOIColor.BLACK;
            titleStyle.RightBorderColor = NPOIColor.BLACK;
            titleStyle.TopBorderColor = NPOIColor.BLACK;
            rowStyle.BorderBottom = BorderStyle.THIN;
            rowStyle.BorderLeft = BorderStyle.THIN;
            rowStyle.BorderRight = BorderStyle.THIN;
            rowStyle.BorderTop = BorderStyle.THIN;
            rowStyle.BottomBorderColor = NPOIColor.BLACK;
            rowStyle.LeftBorderColor = NPOIColor.BLACK;
            rowStyle.RightBorderColor = NPOIColor.BLACK;
            rowStyle.TopBorderColor = NPOIColor.BLACK;
        }

        int iCol = 0, iRow = 1;

        foreach (DataColumn dc in Data.Columns)
        {
            SetValue(row, col + iCol, dc.ColumnName);
            SetStyle(row, col + iCol, titleStyle);
            iCol++;
        }

        rowStyle.FillForegroundColor = NPOIColor.WHITE;

        foreach (DataRow dr in Data.Rows)
        {
            iCol = 0;
            foreach (DataColumn dc in Data.Columns)
            {
                SetValue(row + iRow, col + iCol, dr[dc]);
                SetStyle(row + iRow, col + iCol, rowStyle);
                iCol++;
            }
            iRow++;
        }

        for (int i = 0; i < iCol; i++)
        {
            this.AutoColWidth(i);
        }
    }

    /// <summary>
    /// 读取单元格的值
    /// 注:只对当前ActiveSheet有效
    /// </summary>
    /// <param name="rowIndex">行号</param>
    /// <param name="columnIndex">列号</param>
    /// <returns>单元格的值</returns>
    public object ReadValue(ISheet sheet, int rowIndex, int columnIndex, bool? isDateTime = null)
    {
        try
        {
            ICell cell = sheet.GetRow(rowIndex).GetCell(columnIndex);
            short df = cell.CellStyle.DataFormat;

            //return cell.ToString();
            switch (cell.CellType)
            {
                case CellType.BLANK:
                    return null;
                case CellType.BOOLEAN:
                    return cell.BooleanCellValue;
                case CellType.ERROR:
                    throw new Exception("Cell Value Error");
                case CellType.FORMULA:
                    {
                        switch (cell.CachedFormulaResultType)
                        {
                            case CellType.BLANK:
                                return "";
                            case CellType.BOOLEAN:
                                return cell.BooleanCellValue;
                            case CellType.ERROR:
                                throw new Exception("Cell Value Error");
                            case CellType.FORMULA:
                                throw new Exception("The formula of this cell is too complex!");
                            case CellType.NUMERIC:
                                if (isDateTime == null)
                                {
                                    if (DateUtil.IsCellDateFormatted(cell))
                                    {
                                        return cell.DateCellValue;
                                    }
                                    else
                                    {
                                        return cell.NumericCellValue;
                                    }
                                }
                                else if (isDateTime == true)
                                {
                                    return cell.DateCellValue;
                                }
                                else
                                {
                                    return cell.NumericCellValue;
                                }
                            case CellType.STRING:
                                return cell.StringCellValue;
                            case CellType.Unknown:
                                return cell.ToString();
                            default:
                                return cell.ToString();
                        }
                    }
                case CellType.NUMERIC:
                    {
                        if (isDateTime == null)
                        {
                            if (DateUtil.IsCellDateFormatted(cell))
                            {
                                return cell.DateCellValue;
                            }
                            else
                            {
                                return cell.NumericCellValue;
                            }
                        }
                        else if (isDateTime == true)
                        {
                            return cell.DateCellValue;
                        }
                        else
                        {
                            return cell.NumericCellValue;
                        }
                    }
                case CellType.STRING:
                    return cell.StringCellValue;
                case CellType.Unknown:
                    return cell.ToString();
                default:
                    return cell.ToString();
            }
        }
        catch (System.NullReferenceException)
        {
            return null;
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }

    public int SheetCount
    {
        get
        {
            return Book.NumberOfSheets;
        }
    }

    public string GetSheetName(int index)
    {
        return Book.GetSheetName(index);
    }

    public void AddPicture(byte[] data, int row, int col)
    {
        int picIndex = Book.AddPicture(data, PictureType.PNG);

        IDrawing draw = ActiveSheet.CreateDrawingPatriarch();

        IClientAnchor anchor = draw.CreateAnchor(0, 0, 255, 255, col, row, col + 5, col + 5);
        IPicture pic = draw.CreatePicture(anchor, picIndex);
        pic.Resize();
    }
}

public enum OperatorTypes
{
    /// <summary>
    /// 介于最大值与小值之间
    /// </summary>
    BETWEEN = OperatorType.BETWEEN,
    /// <summary>
    /// 等于最小值
    /// </summary>
    EQUAL = OperatorType.EQUAL,
    /// <summary>
    /// 大于或等于最小值
    /// </summary>
    GREATER_OR_EQUAL = OperatorType.GREATER_OR_EQUAL,
    /// <summary>
    /// 大于最小值
    /// </summary>
    GREATER_THAN = OperatorType.GREATER_THAN,
    /// <summary>
    /// 忽略
    /// </summary>
    NO_COMPARISON = OperatorType.IGNORED,
    /// <summary>
    /// 小于或等于最小值
    /// </summary>
    LESS_OR_EQUAL = OperatorType.LESS_OR_EQUAL,
    /// <summary>
    /// 小于最小值
    /// </summary>
    LESS_THAN = OperatorType.LESS_THAN,
    /// <summary>
    /// 不在最小值与最大值之间
    /// </summary>
    NOT_BETWEEN = OperatorType.NOT_BETWEEN,
    /// <summary>
    /// 不等于最小值
    /// </summary>
    NOT_EQUAL = OperatorType.NOT_EQUAL
}

public enum NPOIDataType
{
    /// <summary>
    /// 验证整数
    /// </summary>
    Integer,
    /// <summary>
    /// 验证符点数
    /// </summary>
    Float,
    /// <summary>
    /// 验证日期
    /// </summary>
    Date,
    /// <summary>
    /// 验证时间
    /// </summary>
    Time,
    /// <summary>
    /// 验证字符长度
    /// </summary>
    TextLength
}

public static class NPOIColor
{

    /// <summary>
    /// 红色
    /// </summary>
    public static short RED { get { return NPOI.HSSF.Util.HSSFColor.RED.index; } }

    /// <summary>
    /// 蓝色
    /// </summary>
    public static short BLUE { get { return NPOI.HSSF.Util.HSSFColor.BLUE.index; } }

    /// <summary>
    /// 浅绿色
    /// </summary>
    public static short AQUA { get { return NPOI.HSSF.Util.HSSFColor.AQUA.index; } }

    /// <summary>
    /// 自动
    /// </summary>
    public static short AUTOMATIC { get { return NPOI.HSSF.Util.HSSFColor.AUTOMATIC.index; } }

    /// <summary>
    /// 黑色
    /// </summary>
    public static short BLACK { get { return NPOI.HSSF.Util.HSSFColor.BLACK.index; } }

    /// <summary>
    /// 蓝灰色
    /// </summary>
    public static short BLUE_GREY { get { return NPOI.HSSF.Util.HSSFColor.BLUE_GREY.index; } }

    /// <summary>
    /// 明绿色
    /// </summary>
    public static short BRIGHT_GREEN { get { return NPOI.HSSF.Util.HSSFColor.BRIGHT_GREEN.index; } }

    /// <summary>
    /// 棕色
    /// </summary>
    public static short BROWN { get { return NPOI.HSSF.Util.HSSFColor.BROWN.index; } }

    /// <summary>
    /// 正常
    /// </summary>
    public static short COLOR_NORMAL { get { return NPOI.HSSF.Util.HSSFColor.COLOR_NORMAL; } }

    /// <summary>
    /// 珊瑚色
    /// </summary>
    public static short CORAL { get { return NPOI.HSSF.Util.HSSFColor.CORAL.index; } }

    /// <summary>
    /// 亮蓝色
    /// </summary>
    public static short CORNFLOWER_BLUE { get { return NPOI.HSSF.Util.HSSFColor.CORNFLOWER_BLUE.index; } }

    /// <summary>
    /// 深蓝色
    /// </summary>
    public static short DARK_BLUE { get { return NPOI.HSSF.Util.HSSFColor.DARK_BLUE.index; } }

    /// <summary>
    /// 深绿色
    /// </summary>
    public static short DARK_GREEN { get { return NPOI.HSSF.Util.HSSFColor.DARK_GREEN.index; } }

    /// <summary>
    /// 深红色
    /// </summary>
    public static short DARK_RED { get { return NPOI.HSSF.Util.HSSFColor.DARK_RED.index; } }

    /// <summary>
    /// 深茶色
    /// </summary>
    public static short DARK_TEAL { get { return NPOI.HSSF.Util.HSSFColor.DARK_TEAL.index; } }

    /// <summary>
    /// 深黄
    /// </summary>
    public static short DARK_YELLOW { get { return NPOI.HSSF.Util.HSSFColor.DARK_YELLOW.index; } }

    /// <summary>
    /// 金色
    /// </summary>
    public static short GOLD { get { return NPOI.HSSF.Util.HSSFColor.GOLD.index; } }

    /// <summary>
    /// 绿色
    /// </summary>
    public static short GREEN { get { return NPOI.HSSF.Util.HSSFColor.GREEN.index; } }

    /// <summary>
    /// 25%灰色
    /// </summary>
    public static short GREY_25_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.GREY_25_PERCENT.index; } }

    /// <summary>
    /// 40%灰色
    /// </summary>
    public static short GREY_40_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.GREY_40_PERCENT.index; } }

    /// <summary>
    /// 50%灰色
    /// </summary>
    public static short GREY_50_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.GREY_50_PERCENT.index; } }

    /// <summary>
    /// 80%灰色
    /// </summary>
    public static short GREY_80_PERCENT { get { return NPOI.HSSF.Util.HSSFColor.GREY_80_PERCENT.index; } }

    /// <summary>
    /// 靛蓝色
    /// </summary>
    public static short INDIGO { get { return NPOI.HSSF.Util.HSSFColor.INDIGO.index; } }

    /// <summary>
    /// 淡紫色
    /// </summary>
    public static short LAVENDER { get { return NPOI.HSSF.Util.HSSFColor.LAVENDER.index; } }

    /// <summary>
    /// 粉黄色
    /// </summary>
    public static short LEMON_CHIFFON { get { return NPOI.HSSF.Util.HSSFColor.LEMON_CHIFFON.index; } }

    /// <summary>
    /// 淡蓝色
    /// </summary>
    public static short LIGHT_BLUE { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_BLUE.index; } }

    /// <summary>
    /// 淡亮蓝色
    /// </summary>
    public static short LIGHT_CORNFLOWER_BLUE { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_CORNFLOWER_BLUE.index; } }

    /// <summary>
    /// 淡绿色
    /// </summary>
    public static short LIGHT_GREEN { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_GREEN.index; } }

    /// <summary>
    /// 淡桔黄色
    /// </summary>
    public static short LIGHT_ORANGE { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_ORANGE.index; } }

    /// <summary>
    /// 淡蓝绿色
    /// </summary>
    public static short LIGHT_TURQUOISE { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_TURQUOISE.index; } }

    /// <summary>
    /// 淡黄色
    /// </summary>
    public static short LIGHT_YELLOW { get { return NPOI.HSSF.Util.HSSFColor.LIGHT_YELLOW.index; } }

    /// <summary>
    /// 绿黄色
    /// </summary>
    public static short LIME { get { return NPOI.HSSF.Util.HSSFColor.LIME.index; } }

    /// <summary>
    /// 栗色
    /// </summary>
    public static short MAROON { get { return NPOI.HSSF.Util.HSSFColor.MAROON.index; } }

    /// <summary>
    /// 橄榄绿色
    /// </summary>
    public static short OLIVE_GREEN { get { return NPOI.HSSF.Util.HSSFColor.OLIVE_GREEN.index; } }

    /// <summary>
    /// 桔色
    /// </summary>
    public static short ORANGE { get { return NPOI.HSSF.Util.HSSFColor.ORANGE.index; } }

    /// <summary>
    /// 白灰蓝色
    /// </summary>
    public static short PALE_BLUE { get { return NPOI.HSSF.Util.HSSFColor.PALE_BLUE.index; } }

    /// <summary>
    /// 粉红色
    /// </summary>
    public static short PINK { get { return NPOI.HSSF.Util.HSSFColor.PINK.index; } }

    /// <summary>
    /// 紫红色
    /// </summary>
    public static short PLUM { get { return NPOI.HSSF.Util.HSSFColor.PLUM.index; } }

    /// <summary>
    /// 玫瑰红色
    /// </summary>
    public static short ROSE { get { return NPOI.HSSF.Util.HSSFColor.ROSE.index; } }

    /// <summary>
    /// 高贵蓝
    /// </summary>
    public static short ROYAL_BLUE { get { return NPOI.HSSF.Util.HSSFColor.ROYAL_BLUE.index; } }

    /// <summary>
    /// 海绿色
    /// </summary>
    public static short SEA_GREEN { get { return NPOI.HSSF.Util.HSSFColor.SEA_GREEN.index; } }

    /// <summary>
    /// 天空蓝
    /// </summary>
    public static short SKY_BLUE { get { return NPOI.HSSF.Util.HSSFColor.SKY_BLUE.index; } }

    /// <summary>
    /// 棕褐色
    /// </summary>
    public static short TAN { get { return NPOI.HSSF.Util.HSSFColor.TAN.index; } }

    /// <summary>
    /// 茶色
    /// </summary>
    public static short TEAL { get { return NPOI.HSSF.Util.HSSFColor.TEAL.index; } }

    /// <summary>
    /// 蓝绿色
    /// </summary>
    public static short TURQUOISE { get { return NPOI.HSSF.Util.HSSFColor.TURQUOISE.index; } }

    /// <summary>
    /// 紫色
    /// </summary>
    public static short VIOLET { get { return NPOI.HSSF.Util.HSSFColor.VIOLET.index; } }

    /// <summary>
    /// 白色
    /// </summary>
    public static short WHITE { get { return NPOI.HSSF.Util.HSSFColor.WHITE.index; } }

    /// <summary>
    /// 黄色
    /// </summary>
    public static short YELLOW { get { return NPOI.HSSF.Util.HSSFColor.YELLOW.index; } }

}

/// <summary>
/// 针对excel的Oledb
/// </summary>
public class OleDbExcel
{
    /// <summary>
    /// OLEDB链接
    /// </summary>
    public OleDbConnection Connection
    {
        get;
        set;
    }

    /// <summary>
    /// 用Oledb对Excel进行操做
    /// 注:必须是标准表形式Excel内容
    /// </summary>
    /// <param name="excelFile">Excel文件</param>
    public OleDbExcel(string excelFile)
    {
        string conStr = string.Empty;
        FileInfo file = new FileInfo(excelFile);
        if (!file.Exists) { throw new Exception("文件不存在"); }
        string extension = file.Extension;
        switch (extension)
        {
            case ".xls":
                conStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelFile + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'";
                break;
            case ".xlsx":
                conStr = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + excelFile + ";Extended Properties='Excel 12.0;HDR=Yes;IMEX=1;'";
                break;
            default:
                conStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + excelFile + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'";
                break;
        }

        //连接Excel
        Connection = new OleDbConnection(conStr);
    }

    private List<string> tableNames;

    /// <summary>
    /// 获取Excel内的Sheet名称
    /// </summary>
    public List<string> Sheets
    {
        get
        {
            if (tableNames == null)
            {
                try
                {
                    tableNames = new List<string>();
                    //读取Excel里面的sheet名
                    Connection.Open();

                    DataTable schemaTable = Connection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });

                    for (int i = 0; i < schemaTable.Rows.Count; i++)
                    {
                        DataRow dr = schemaTable.Rows[i];
                        string tbName = dr["table_name"].ToString();
                        if (tbName[tbName.Length - 1] == '$')
                        {
                            tableNames.Add(tbName);
                        }
                    }
                    Connection.Close();
                }
                catch (Exception ex)
                {
                    if (Connection.State != ConnectionState.Closed)
                    {
                        Connection.Close();
                    }
                    throw new Exception(ex.Message, ex);
                }
            }
            return tableNames;
        }
    }

    /// <summary>
    /// 查询出全部数据
    /// </summary>
    /// <param name="tableName">Sheet名称</param>
    /// <returns>sheet内的全部数据</returns>
    public DataSet QueryAll(string tableName)
    {
        try
        {
            DataSet excelData = new DataSet();
            OleDbDataAdapter adapter = new OleDbDataAdapter();
            adapter.SelectCommand = new OleDbCommand();
            adapter.SelectCommand.Connection = Connection;
            adapter.SelectCommand.CommandText = string.Format("SELECT * FROM {0}", "[" + tableName + "]");
            adapter.Fill(excelData);
            return excelData;
        }
        catch (Exception ex)
        {
            if (Connection.State != ConnectionState.Closed)
            {
                Connection.Close();
            }
            throw new Exception(ex.Message, ex);
        }
    }

    /// <summary>
    /// 查询出全部数据
    /// </summary>
    /// <param name="tableIndex">Sheet序号(从0开始)</param>
    /// <returns>sheet内的全部数据</returns>
    public DataSet QueryAll(int tableIndex)
    {
        return QueryAll(Sheets[tableIndex]);
    }

    /// <summary>
    /// 利用Sql进行查询
    /// </summary>
    /// <param name="sql">Sql语句</param>
    /// <returns>查询出的数据</returns>
    public DataSet Query(string sql)
    {
        try
        {
            DataSet excelData = new DataSet();
            OleDbDataAdapter adapter = new OleDbDataAdapter(sql, Connection);
            adapter.Fill(excelData);
            return excelData;
        }
        catch (Exception ex)
        {
            if (Connection.State != ConnectionState.Closed)
            {
                Connection.Close();
            }
            throw new Exception(ex.Message, ex);
        }
    }

    /// <summary>
    /// 利用Sql进行查询
    /// </summary>
    /// <param name="sql">Sql语句</param>
    /// <param name="param">查询参数</param>
    /// <returns>查询出的数据</returns>
    public DataSet Query(string sql, params OleDbParameter[] param)
    {
        try
        {
            DataSet excelData = new DataSet();
            OleDbDataAdapter adapter = new OleDbDataAdapter(sql, Connection);
            adapter.SelectCommand.Parameters.AddRange(param);
            adapter.Fill(excelData);
            return excelData;
        }
        catch (Exception ex)
        {
            if (Connection.State != ConnectionState.Closed)
            {
                Connection.Close();
            }
            throw new Exception(ex.Message, ex);
        }
    }

    /// <summary>
    /// 利用Sql进行数据操做
    /// </summary>
    /// <param name="sql">sql语句</param>
    /// <returns>影响的行数</returns>
    public int ExecuteSql(string sql)
    {
        try
        {
            Connection.Open();
            OleDbCommand cmd = Connection.CreateCommand();
            cmd.CommandText = sql;
            int rtn = cmd.ExecuteNonQuery();
            Connection.Close();
            return rtn;
        }
        catch (Exception ex)
        {
            if (Connection.State != ConnectionState.Closed)
            {
                Connection.Close();
            }
            throw new Exception(ex.Message, ex);
        }
    }

    /// <summary>
    /// 利用Sql进行数据操做
    /// </summary>
    /// <param name="sql">sql语句</param>
    /// <param name="param">执行参数</param>
    /// <returns>影响的行数</returns>
    public int ExecuteSql(string sql, params OleDbParameter[] param)
    {
        try
        {
            Connection.Open();
            OleDbCommand cmd = Connection.CreateCommand();
            cmd.CommandText = sql;
            cmd.Parameters.AddRange(param);
            int rtn = cmd.ExecuteNonQuery();
            Connection.Close();
            return rtn;
        }
        catch (Exception ex)
        {
            if (Connection.State != ConnectionState.Closed)
            {
                Connection.Close();
            }
            throw new Exception(ex.Message, ex);
        }
    }
}
View Code

二、使用 后台sql

        [HttpPost]
        public void ExportExcel(string excelName, string tableStr, string imageAction = "")
        {
            tableStr = Microsoft.JScript.GlobalObject.unescape(tableStr);
            //tableStr = "<table><tr><td>test1</td><td>test2</td></tr><tr><td>1</td><td>2</td></tr></table>";
            DataTable dt = HtmlTableToDataTable(tableStr);
            NPOIExcel excel = new NPOIExcel();
            excel.WriteDataTable(dt, 0, 0, NPOIColor.SKY_BLUE);

            if (!string.IsNullOrWhiteSpace(imageAction))
            {
                var method = this.GetType().GetMethod(imageAction);
                var param = method.GetParameters();
                object[] objParam = new object[param.Length];
                int i = 0;
                foreach (var pa in param)
                {
                    if (pa.Name == "export")
                    {
                        objParam[i] = true;
                        continue;
                    }
                    string value = Request[pa.Name];
                    if (string.IsNullOrEmpty(value))
                    {
                        objParam[i] = pa.RawDefaultValue;
                    }
                    else
                    {
                        objParam[i] = Convert.ChangeType(value, pa.ParameterType);
                    }
                    i++;
                }

                byte[] bytes = (byte[])method.Invoke(this, objParam);
                excel.AddPicture(bytes, dt.Rows.Count + 1, 0);

            }
            MemoryStream ms = excel.Save();
            ms.Position = 0;
            Response.Clear();
            Response.ContentType = "application/-excel";
            Response.HeaderEncoding = System.Text.Encoding.UTF8;
            Response.AddHeader("Content-Disposition", "attachment;filename=" + Server.UrlEncode(excelName + ".xls"));
            byte[] buffer = new byte[ms.Length];
            ms.Read(buffer, 0, buffer.Length);
            Response.AddHeader("Content-Length", buffer.Length.ToString());
            Response.BinaryWrite(buffer);
            Response.Flush();

        }

        private DataTable HtmlTableToDataTable(string tableStr)
        {
            tableStr = tableStr.Replace("\n", "");
            tableStr = tableStr.Replace("\t", "");
            Regex re = new Regex("<BR>", RegexOptions.IgnoreCase);
            tableStr = re.Replace(tableStr, "\r\n");
            re = new Regex("&nbsp;", RegexOptions.IgnoreCase);
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(tableStr);

            var trs = doc.GetElementsByTagName("tr");

            DataTable rtn = new DataTable();

            for (int i = 0; i < trs.Count; i++)
            {
                for (int j = 0; j < trs[i].ChildNodes.Count; j++)
                {
                    var td = trs[i].ChildNodes[j].InnerText.Trim();
                    td = td.Replace(" ", "");
                    re.Replace(td, " ");
                    if (rtn.Columns.Count <= j)
                    {
                        rtn.Columns.Add(td);
                    }
                    else
                    {
                        if (rtn.Rows.Count <= i - 1)
                        {
                            rtn.Rows.Add(rtn.NewRow());
                        }
                        rtn.Rows[i - 1][j] = td;
                    }
                }
            }

            return rtn;

        }
View Code

三、前台app

按钮ide

 <a href="javascript:void(0)" onclick="ExportExcel('AssManageQueryClose','exportTable')" style="font-size: 13px;">@Html.Lang("输出报表", "Export Report")</a>

table:

  <table class="dataList" id="exportTable">
                                <tr class="title">
                                    <td>
                                      title</td>
                                </tr>

                                @foreach (var item in Model)
                                {
                                    <tr class="item">
                                        <td>
                                           Content</td>
                                    </tr>
                                }
                            </table>

js:

    //导出Excel
        function ExportExcel(excelName, tableID) {
            if ($("#" + excelName).length <= 0) {
                var table = "<table>" + $("#" + tableID).html() + "</table>";
                table = escape(table);
                var form = "<form id='" + excelName + "' action='@Url.Action("ExportExcel")' method='post'>";
                form += "<input type='hidden' id='excelName' name='excelName' value='" + excelName + "' />";
                form += "<input type='hidden' id='tableStr' name='tableStr' value='" + table + "' />";
                form += "</form>";
                $(form).appendTo("body");
            }
            $("#" + excelName).submit();
        }