asp.net指定GridView 导出Excel

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   protected void cmdExportExcel_Click(object sender, EventArgs e)
    {
        startTime = Session["startTime"] as string;
        endTime = Session["endTime"] as string;
        string templateFileName = "催收员排名统计报告" + DateTime.Now.ToString("yyyy-MM-dd") + ".xls";
        DumpExcel(this.dvResult, templateFileName);
    }
private void DumpExcel(GridView gv, string FileName)
    {//带格式导出

        string style = @"<style> .text { } </script>";
        Response.ClearContent();
        Response.Charset = "GB2312";
        Response.ContentEncoding = System.Text.Encoding.Default;
        Response.AddHeader("content-disposition", "attachment; filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString());
        Response.ContentType = "application/excel";
        StringWriter sw = new StringWriter();
        HtmlTextWriter htw = new HtmlTextWriter(sw);
        gv.RenderControl(htw);
        // Style is added dynamically
        Response.Write(style);
        Response.Write(sw.ToString());
        Response.End();
    }
    //处理GridView应该放在 runat="server"问题
    public override void VerifyRenderingInServerForm(Control control)
    {
        //这里什么也不用写
    }