C#：GridView导出Excel，以及runat=server错误处理方法
例如，你有个按钮需要点击它就会把当前显示导出Excel，按钮例子如下
<asp:LinkButton ID="LinkToExcel" runat="server" OnClick="LinkToExcel_Click">导出报表</asp:LinkButton>
双击按钮就会在语句中生成按钮方法，本例中就是红色字体部分，
然后在后台把如下代码复制进去
protected void LinkToExcel_Click(object sender, EventArgs e)
{
string style = @"<style> .text { } </script> ";
Response.Clear();
Response.Buffer = true;
Response.Charset = "GB2312"; //请勿删除此行，否则会出现乱码
Response.AppendHeader("Content-Disposition", "attachment; filename =NewFileName.xls");
Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312"); //设置输出流为简体中文
Response.ContentType = "application/ms-excel"; //设置输出文件类型为excel文件
this.EnableViewState = false;
System.Globalization.CultureInfo myCItrad = new System.Globalization.CultureInfo("ZH-CN", true);
System.IO.StringWriter oStringWriter = new System.IO.StringWriter(myCItrad);
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
this.GridView1.RenderControl(oHtmlTextWriter);
Response.Write(style);
Response.Write(oStringWriter.ToString());
Response.End();
}
//以下的代码务必要加在上面一段后面，
public override void VerifyRenderingInServerForm(Control control)
{
// 覆盖VerifyRenderingInServerForm方法，非常重要，否则系统会报错
//base.VerifyRenderingInServerForm(control);
}
//否则会出现错误：
//Control 'GridView1' of type 'GridView' must be placed inside a form tag with runat=server.
本文转自kenty博客园博客，原文链接http://www.cnblogs.com/kentyshang/archive/2012/12/03/2800186.html如需转载请自行联系原作者
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