C# 多个CSV文件合并成一个文件
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.IO;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
string FileName = string.Empty;
DataTable dtExcelData;
public Form1()
{
InitializeComponent();
}
private void bthChose_Click(object sender, EventArgs e)
{
OpenFileDialog opd = new OpenFileDialog();//实例化选择打开窗口对象
opd.Multiselect = false;//定义不允许多选
opd.Filter = "(*.*)|*.csv";//设置可以选择所有文件
if (opd.ShowDialog() == DialogResult.OK)
{
//写入自己的代码
txtFileName.Text = opd.FileName;
FileName = opd.FileName;
}
opd.Dispose();
}
private void button1_Click(object sender, EventArgs e)
{
string path = "";
string fname = "";
if (FileName.Length <= 0)
{
MessageBox.Show("请上传文件");
return;
}
else if (System.IO.Path.GetExtension(FileName) != ".csv")
{
MessageBox.Show("请上传csv格式文件");
return;
}
else
{
path = FileName.Substring(0, FileName.LastIndexOf("\\") + 1);
// fname = FileName.Substring(FileName.LastIndexOf("\\") + 1);
}
GetDate(path);
}
public void GetDate(string path)
{
try
{
DataGridView dgv = new DataGridView();
dgv.RowHeadersVisible = true;
dgv.Columns.Clear();
dgv.Columns.Add("Sort", "Sort");
dgv.Columns.Add("TN", "TN");
dgv.Columns.Add("FileName", "FileName");
string[] FileNameList = Directory.GetFiles(path);
Array.Sort(FileNameList,new TSort() );
int i = 0;
foreach (String filePath in FileNameList)
{
i++;
string fname = filePath.Substring(FileName.LastIndexOf("\\") + 1);
StreamReader sr = new StreamReader(filePath);
while (true)
{
String strData = sr.ReadLine();
if (!String.IsNullOrEmpty(strData))
{
String[] strValue = strData.Split(',');
int index = dgv.Rows.Add();
DataGridViewRow dr = dgv.Rows[index];
dr.Cells[0].Value = i.ToString();
dr.Cells[1].Value = strValue[0];
dr.Cells[2].Value = fname;
}
else
{
break;
}
}
}
if (dgv.Rows.Count > 0)
{
ExcelHelper eh = new ExcelHelper();
eh.OutToExcelFromDataGridView("TNT", dgv, false);
}
} catch (Exception ex)
{
MessageBox.Show("抱歉出错了！"+ex.Message);
}
}
}
}
using System;
using System.Collections.Generic;
using System.Text;
namespace WindowsFormsApplication1
{
public class TSort : System.Collections.IComparer
{
public int Compare(object x, object y)
{
string s1 = (string)x;
string s2 = (string)y;
if (s1.Length > s2.Length) return 1;
if (s1.Length < s2.Length) return -1;
for (int i = 0; i < s1.Length; i++)
{
if (s1[i] > s2[i]) return 1;
if (s1[i] < s2[i]) return -1;
}
return 0;
}
}
}
using System;
using System.IO;
using System.Data;
using System.Collections;
using System.Data.OleDb;
using System.Web;
using System.Windows.Forms;
using System.Text;
using Microsoft.Office.Interop.Excel;
/// <summary>
/// Excel操作类
/// </summary>
/// Microsoft Excel 11.0 Object Library
public class ExcelHelper
{
public bool OutToExcelFromDataGridView(string title, DataGridView dgv, bool isShowExcel)
{
int titleColumnSpan = 0;//标题的跨列数
string fileName = "tnt";//保存的excel文件名
int columnIndex = 1;//列索引
if (dgv.Rows.Count == 0)
return false;
/*保存对话框*/
//SaveFileDialog sfd = new SaveFileDialog();
//sfd.Filter = "导出Excel(*.xls)|*.xls";
//sfd.FileName = title + DateTime.Now.ToString("yyyyMMddhhmmss");
//if (sfd.ShowDialog() == DialogResult.OK)
//{
// fileName = sfd.FileName;
/*建立Excel对象*/
Microsoft.Office.Interop.Excel.Application excel = new Microsoft.Office.Interop.Excel.Application();
if (excel == null)
{
MessageBox.Show("无法创建Excel对象,可能您的计算机未安装Excel!");
return false;
}
try
{
excel.Application.Workbooks.Add(true);
excel.Visible = isShowExcel;
/*分析标题的跨列数*/
foreach (DataGridViewColumn column in dgv.Columns)
{
if (column.Visible == true)
titleColumnSpan++;
}
/*合并标题单元格*/
Microsoft.Office.Interop.Excel.Worksheet worksheet = (Microsoft.Office.Interop.Excel.Worksheet)excel.ActiveSheet;
//worksheet.get_Range("A1", "C10").Merge();
worksheet.get_Range(worksheet.Cells[1, 1] as Range, worksheet.Cells[1, titleColumnSpan] as Range).Merge();
/*生成标题*/
excel.Cells[1, 1] = title;
(excel.Cells[1, 1] as Range).HorizontalAlignment = XlHAlign.xlHAlignCenter;//标题居中
//生成字段名称
columnIndex = 1;
for (int i = 0; i < dgv.ColumnCount; i++)
{
if (dgv.Columns[i].Visible == true)
{
excel.Cells[2, columnIndex] = dgv.Columns[i].HeaderText;
(excel.Cells[2, columnIndex] as Range).HorizontalAlignment = XlHAlign.xlHAlignCenter;//字段居中
columnIndex++;
}
}
//填充数据
for (int i = 0; i < dgv.RowCount; i++)
{
columnIndex = 1;
for (int j = 0; j < dgv.ColumnCount; j++)
{
if (dgv.Columns[j].Visible == true)
{
if (dgv[j, i].ValueType == typeof(string))
{
excel.Cells[i + 3, columnIndex] = "'" + dgv[j, i].Value.ToString();
}
else
{
excel.Cells[i + 3, columnIndex] = dgv[j, i].Value.ToString();
}
(excel.Cells[i + 3, columnIndex] as Range).HorizontalAlignment = XlHAlign.xlHAlignLeft;//字段居中
columnIndex++;
}
}
}
worksheet.SaveAs(fileName, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);
}
catch { }
finally
{
excel.Quit();
excel = null;
GC.Collect();
}
//KillProcess("Excel");
return true;
//}
//else
//{
// return false;
//}
}
private static void KillProcess(string processName)//杀死与Excel相关的进程
{
System.Diagnostics.Process myproc = new System.Diagnostics.Process();//得到所有打开的进程
try
{
foreach (System.Diagnostics.Process thisproc in System.Diagnostics.Process.GetProcessesByName(processName))
{
if (!thisproc.CloseMainWindow())
{
thisproc.Kill();
}
}
}
catch (Exception Exc)
{
throw new Exception("", Exc);
}
}
}