C#将DataGridView中的数据保存为EXCEL的方法

/// <summary>

///方法，导出DataGridView中的数据到Excel文件

/// </summary>

/// <param name= "dgv "> DataGridView </param>

public static void DataGridViewToExcel(DataGridView dgv)

{

#region 验证可操作性

//申明保存对话框

SaveFileDialog dlg = new SaveFileDialog();

//默然文件后缀

dlg.DefaultExt = "xls ";

//文件后缀列表

dlg.Filter = "EXCEL文件(*.XLS) ¦*.xls ";

//默然路径是系统当前路径

dlg.InitialDirectory = Directory.GetCurrentDirectory();

//打开保存对话框

dlg.ShowDialog();

//返回文件路径

string fileNameString = dlg.FileName;

//验证strFileName是否为空或值无效

if (fileNameString.Trim() == " ")

{ return; }

//定义表格内数据的行数和列数

int rowscount = dgv.Rows.Count;

int colscount = dgv.Columns.Count;

//行数必须大于0

if (rowscount <= 0)

{

MessageBox.Show( "没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//列数必须大于0

if (colscount <= 0)

{

MessageBox.Show( "没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//行数不可以大于65536

if (rowscount > 65536)

{

MessageBox.Show( "数据记录数太多(最多不能超过65536条)，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//列数不可以大于255

if (colscount > 255)

{

MessageBox.Show( "数据记录行数太多，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//验证以fileNameString命名的文件是否存在，如果存在删除它

FileInfo file = new FileInfo(fileNameString);

if (file.Exists)

{

try

{

file.Delete();

}

catch (Exception error)

{

MessageBox.Show(error.Message, "删除失败 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);

return;

}

}

#endregion

Excel.Application objExcel=null;

Excel.Workbook objWorkbook=null;

Excel.Worksheet objsheet=null;

try

{

//申明对象

objExcel = new Microsoft.Office.Interop.Excel.Application();

objWorkbook = objExcel.Workbooks.Add(Missing.Value);

objsheet = (Excel.Worksheet)objWorkbook.ActiveSheet;

//设置EXCEL不可见

objExcel.Visible = false;

//向Excel中写入表格的表头

int displayColumnsCount = 1;

for (int i = 0; i <= dgv.ColumnCount-1; i++)

{

if (dgv.Columns[i].Visible==true)

{

objExcel.Cells[1, displayColumnsCount] = dgv.Columns[i].HeaderText.Trim();

displayColumnsCount++;

}

}

//设置进度条

//tempProgressBar.Refresh();

//tempProgressBar.Visible = true;

//tempProgressBar.Minimum=1;

//tempProgressBar.Maximum=dgv.RowCount;

//tempProgressBar.Step=1;

//向Excel中逐行逐列写入表格中的数据

for (int row = 0; row <= dgv.RowCount - 1; row++)

{

//tempProgressBar.PerformStep();

displayColumnsCount = 1;

for (int col = 0; col < colscount; col++)

{

if (dgv.Columns[col].Visible == true)

{

objExcel.Cells[row + 2, displayColumnsCount] = dgv.Rows[row].Cells[col].Value.ToString().Trim();

displayColumnsCount++;

}

}

}

//隐藏进度条

//tempProgressBar.Visible = false;

//保存文件

objWorkbook.SaveAs(fileNameString, Missing.Value, Missing.Value, Missing.Value, Missing.Value,

Missing.Value, Excel.XlSaveAsAccessMode.xlShared, Missing.Value, Missing.Value, Missing.Value,

Missing.Value, Missing.Value);

}

catch(Exception error)

{

MessageBox.Show(error.Message, "警告 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);

return;

}

finally

{

//关闭Excel应用

if (objWorkbook != null) objWorkbook.Close(Missing.Value, Missing.Value, Missing.Value);

if (objExcel.Workbooks != null) objExcel.Workbooks.Close();

if (objExcel != null) objExcel.Quit();

objsheet = null;

objWorkbook = null;

objExcel = null;

}

MessageBox.Show(fileNameString + ""n"n导出完毕! ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

}

#region 验证可操作性

////申明保存对话框

//SaveFileDialog dlg = new SaveFileDialog();

////默然文件后缀

//dlg.DefaultExt = "xls ";

////文件后缀列表

//dlg.Filter = "EXCEL文件(*.XLS)|*.xls ";

////默然路径是系统当前路径

//dlg.InitialDirectory = Directory.GetCurrentDirectory();

////打开保存对话框

//dlg.ShowDialog();

////返回文件路径

//string fileNameString = dlg.FileName;

////验证strFileName是否为空或值无效

//if (fileNameString.Trim() == " ")

//{ return; }

//定义表格内数据的行数和列数

int rowscount = this.dataGridView2.Rows.Count;

int colscount = this.dataGridView2.Columns.Count;

//行数必须大于0

if (rowscount <= 0)

{

MessageBox.Show( "没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//列数必须大于0

if (colscount <= 0)

{

MessageBox.Show( "没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//行数不可以大于65536

if (rowscount > 65536)

{

MessageBox.Show( "数据记录数太多(最多不能超过65536条)，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//列数不可以大于255

if (colscount > 255)

{

MessageBox.Show( "数据记录行数太多，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

////验证以fileNameString命名的文件是否存在，如果存在删除它

//FileInfo file = new FileInfo(fileNameString);

//if (file.Exists)

//{

// try

// {

// file.Delete();

// }

// catch (Exception error)

// {

// MessageBox.Show(error.Message, "删除失败 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);

// return;

// }

//}

#endregion

//导出到execl

try

{

//没有数据的话就不往下执行

if (dataGridView2.Rows.Count == 0)

return;

//实例化一个Excel.Application对象

Excel.Application excel = new Excel.Application();

//让后台执行设置为不可见，为true的话会看到打开一个Excel，然后数据在往里写

excel.Visible = false;

//新增加一个工作簿，Workbook是直接保存，不会弹出保存对话框，加上Application会弹出保存对话框，值为false会报错

excel.Application.Workbooks.Add(true);

//生成Excel中列头名称

for (int i = 0; i < dataGridView2.Columns.Count; i++)

{

excel.Cells[1, i + 1] = dataGridView2.Columns[i].HeaderText;

}

//把DataGridView当前页的数据保存在Excel中

for (int i = 0; i < dataGridView2.Rows.Count - 1; i++)

{

for (int j = 0; j < dataGridView2.Columns.Count; j++)

{

if (dataGridView2[j, i].ValueType == typeof(string))

{

excel.Cells[i + 2, j + 1] = "'" + dataGridView2[j, i].Value.ToString();

}

else

{

excel.Cells[i + 2, j + 1] = dataGridView2[j, i].Value.ToString();

}

}

}

//设置禁止弹出保存和覆盖的询问提示框

excel.DisplayAlerts = false;

excel.AlertBeforeOverwriting = false;

//保存工作簿

//excel.Application.Workbooks.Add(true).Save();

//保存excel文件

excel.Save("D:" + """KKHMD.xls");

//确保Excel进程关闭

excel.Quit();

excel = null;

}

catch (Exception ex)

{

MessageBox.Show(ex.Message, "错误提示");

}

/// <summary>

///方法，导出DataGridView中的数据到Excel文件

/// </summary>

/// <param name= "dgv "> DataGridView </param>

public static void DataGridViewToExcel(DataGridView dgv)

{

#region 验证可操作性

//申明保存对话框

SaveFileDialog dlg = new SaveFileDialog();

//默然文件后缀

dlg.DefaultExt = "xls ";

//文件后缀列表

dlg.Filter = "EXCEL文件(*.XLS)|*.xls ";

//默然路径是系统当前路径

dlg.InitialDirectory = Directory.GetCurrentDirectory();

//打开保存对话框

dlg.ShowDialog();

//返回文件路径

string fileNameString = dlg.FileName;

//验证strFileName是否为空或值无效

if (fileNameString.Trim() == " ")

{ return; }

//定义表格内数据的行数和列数

int rowscount = dgv.Rows.Count;

int colscount = dgv.Columns.Count;

//行数必须大于0

if (rowscount <= 0)

{

MessageBox.Show( "没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//列数必须大于0

if (colscount <= 0)

{

MessageBox.Show( "没有数据可供保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//行数不可以大于65536

if (rowscount > 65536)

{

MessageBox.Show( "数据记录数太多(最多不能超过65536条)，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//列数不可以大于255

if (colscount > 255)

{

MessageBox.Show( "数据记录行数太多，不能保存 ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

return;

}

//验证以fileNameString命名的文件是否存在，如果存在删除它

FileInfo file = new FileInfo(fileNameString);

if (file.Exists)

{

try

{

file.Delete();

}

catch (Exception error)

{

MessageBox.Show(error.Message, "删除失败 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);

return;

}

}

#endregion

Excel.Application objExcel=null;

Excel.Workbook objWorkbook=null;

Excel.Worksheet objsheet=null;

try

{

//申明对象

objExcel = new Microsoft.Office.Interop.Excel.Application();

objWorkbook = objExcel.Workbooks.Add(Missing.Value);

objsheet = (Excel.Worksheet)objWorkbook.ActiveSheet;

//设置EXCEL不可见

objExcel.Visible = false;

//向Excel中写入表格的表头

int displayColumnsCount = 1;

for (int i = 0; i <= dgv.ColumnCount-1; i++)

{

if (dgv.Columns[i].Visible==true)

{

objExcel.Cells[1, displayColumnsCount] = dgv.Columns[i].HeaderText.Trim();

displayColumnsCount++;

}

}

//设置进度条

//tempProgressBar.Refresh();

//tempProgressBar.Visible = true;

//tempProgressBar.Minimum=1;

//tempProgressBar.Maximum=dgv.RowCount;

//tempProgressBar.Step=1;

//向Excel中逐行逐列写入表格中的数据

for (int row = 0; row <= dgv.RowCount - 1; row++)

{

//tempProgressBar.PerformStep();

displayColumnsCount = 1;

for (int col = 0; col < colscount; col++)

{

if (dgv.Columns[col].Visible == true)

{

objExcel.Cells[row + 2, displayColumnsCount] = dgv.Rows[row].Cells[col].Value.ToString().Trim();

displayColumnsCount++;

}

}

}

//隐藏进度条

//tempProgressBar.Visible = false;

//保存文件

objWorkbook.SaveAs(fileNameString, Missing.Value, Missing.Value, Missing.Value, Missing.Value,

Missing.Value, Excel.XlSaveAsAccessMode.xlShared, Missing.Value, Missing.Value, Missing.Value,

Missing.Value, Missing.Value);

}

catch(Exception error)

{

MessageBox.Show(error.Message, "警告 ", MessageBoxButtons.OK, MessageBoxIcon.Warning);

return;

}

finally

{

//关闭Excel应用

if (objWorkbook != null) objWorkbook.Close(Missing.Value, Missing.Value, Missing.Value);

if (objExcel.Workbooks != null) objExcel.Workbooks.Close();

if (objExcel != null) objExcel.Quit();

objsheet = null;

objWorkbook = null;

objExcel = null;

}

MessageBox.Show(fileNameString + ""n"n导出完毕! ", "提示 ", MessageBoxButtons.OK, MessageBoxIcon.Information);

}