ASP.NET Excel数据导出数据库

        /// <summary>
        /// 根據gridview導出excel
        /// </summary>
        /// <param name="ctl"></param>
        public void DGToExcel(System.Web.UI.Control ctl)
        {
            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=Excel.xls");
            HttpContext.Current.Response.Charset = "UTF-8";
            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");
            HttpContext.Current.Response.ContentType = "application/ms-excel";
            ctl.Page.EnableViewState = false;
            System.IO.StringWriter tw = new System.IO.StringWriter();
            System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
            ctl.RenderControl(hw);
            HttpContext.Current.Response.Write(tw.ToString());
            HttpContext.Current.Response.End();
        }
        public override void VerifyRenderingInServerForm(Control control)
        {
        }