GridView导出到Excel操作

aspx.cs页面写一段代码：

public override void VerifyRenderingInServerForm(Control control)
{
// Confirms that an HtmlForm control is rendered for
}

 aspx前端页面顶端写：EnableEventValidation = "false"，例如：
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="AdminMain.aspx.cs" Inherits="QDSJ_Web.Admin.AdminMain" EnableEventValidation = "false" %>

点击【导出】按钮：

protected void btnToExcel_Click(object sender, EventArgs e)
{
Response.Clear();
Response.BufferOutput = true;
//设定输出的字符集
Response.Charset = "GB2312";

//假定导出的文件名为FileName.xls
Response.AppendHeader("Content-Disposition", "attachment;filename=WebInfo.xls");
Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
//设置导出文件的格式
Response.ContentType = "application/vnd.ms-excel";
//关闭ViewState
EnableViewState = false;
System.Globalization.CultureInfo cultureInfo = new System.Globalization.CultureInfo("ZH-CN", true);
System.IO.StringWriter stringWriter = new System.IO.StringWriter(cultureInfo);
System.Web.UI.HtmlTextWriter textWriter = new System.Web.UI.HtmlTextWriter(stringWriter);
GridView1.RenderControl(textWriter);
//把HTML写回浏览器
Response.Write(stringWriter.ToString());
Response.End();
}