using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Drawing;
using Excel=
Microsoft.Office.Interop.Excel;//ASP.NET中Excel的命名空间
using System.Data.SqlClient;
using System.Data;
//输出方法
protected void Printer(DataTable
dataGridView1)
{
//创建一个Excel应用程序对象，如果未创建成功则推出。
Excel.Application excel1 = new Excel.Application();
if (excel1 == null)
{
System.Web.HttpContext.Current.Response.Write("无法创建Excel对象，可能你的电脑未装Excel");
}
Excel.Workbooks workBooks1 = excel1.Workbooks;
Excel.Workbook workBook1 =
workBooks1.Add(Excel.XlWBATemplate.xlWBATWorksheet);
Excel.Worksheet worksheet =
(Microsoft.Office.Interop.Excel.Worksheet)workBook1.Worksheets[1];
//取得sheet1
//把DataTable的表头导入到Excel的第一行
for (int i = 0; i < dataGridView1.Columns.Count; i++)
{
worksheet.Cells[1, i + 1] =
dataGridView1.Columns[i].ColumnName.ToString();
}
//把DataTable的数据导入到Excel中（这里用的是两个for循环，当表中行，列比较少时
还 可以，但是比较多时，速度就会很慢，我电脑两万五千条用了尽量分钟）
for (int i = 0; i < dataGridView1.Rows.Count; i++)
{
for (int j = 0; j < dataGridView1.Columns.Count; j++)
{
worksheet.Cells[i + 2, j + 1] = dataGridView1.Rows[i][
j].ToString();
}
}
try
{
//保存Excel
workBook1.Saved = true;
workBook1.SaveCopyAs("F:\\www.xlsx");
}
catch (Exception ex)
{
System.Web.HttpContext.Current.Response.Write("导出文件时出错，文件可能正被打开!\n"
+ ex.ToString());
}
workBook1.Close();
excel1.Visible = true;
if (excel1 != null)
{
excel1.Workbooks.Close();
excel1.Quit();
int generation = System.GC.GetGeneration(excel1);
System.Runtime.InteropServices.Marshal.ReleaseComObject(excel1);
excel1 = null;
System.GC.Collect(generation);
}
}