public override void VerifyRenderingInServerForm(Control control) { }
    protected void Unnamed1_Click(object sender, EventArgs e)
    {
        string FileName = "用稿统计表";
        Response.Clear();
        Response.Buffer = true;
        Response.Charset = "utf-8";
        Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName) + ".xls");
        Response.ContentEncoding = System.Text.Encoding.UTF8;
        Response.ContentType = "application/ms-excel";//设置输出文件类型为excel文件。 
        System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
        System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
        pannel.RenderControl(oHtmlTextWriter); //pannel为其容器ID
        Response.Output.Write(oStringWriter.ToString());
        Response.Flush();
        Response.End();
    }