C# web 把dataSet数据导出为Excel文件

引入命名空间：

using System.Data;

using Microsoft.Office.Interop.Excel;

添加com引用：

Microsoft.Office.Interop.Excel.dll

OFFICE.DLL

C#:

public void doReports(System.Data.DataSet ds, string strExcelFileName)

{

strExcelFileName = "D:/"+ strExcelFileName + ".xls";

bool fileSaved = false;

Application xlApp = new Application();

if (xlApp == null)

{

return;

}

Workbooks workbooks = xlApp.Workbooks;

Workbook workbook = workbooks.Add(XlWBATemplate.xlWBATWorksheet);

Worksheet worksheet = (Worksheet)workbook.Worksheets[1];//取得sheet1

//写入字段

for (int i = 0; i < ds.Tables[0].Columns.Count; i++)

{

worksheet.Cells[1, i + 1] = ds.Tables[0].Columns[i].ColumnName;

}

//写入数值

for (int r = 0; r < ds.Tables[0].Rows.Count; r++)

{

for (int i = 0; i < ds.Tables[0].Columns.Count; i++)

{

worksheet.Cells[r + 2, i + 1] = ds.Tables[0].Rows[r][i];

}

}

worksheet.Columns.EntireColumn.AutoFit();//列宽自适应。

if (strExcelFileName != "")

{

try

{

workbook.Saved = true;

workbook.SaveCopyAs(strExcelFileName);//保存创建文件

fileSaved = true;

}

catch (Exception ex)

{

fileSaved = false;

}

}

else

{

fileSaved = false;

}

xlApp.Quit();

GC.Collect();//强行销毁

//导出成功就打开文件

if (fileSaved && System.IO.File.Exists(strExcelFileName))

System.Diagnostics.Process.Start(strExcelFileName); //打开EXCEL

}