ASP.NET GridView导出

        /// <summary>
        /// 将Web控件或页面信息导出(带文件名参数)
        /// </summary>
        /// <param name="source">控件实例</param>        
        /// <param name="DocumentType">导出类型:Excel或Word</param>
        /// <param name="filename">保存文件名</param>
        public void ExportControl(System.Web.UI.Control source, string DocumentType, string filename)
        {
            //设置Http的头信息,编码格式
            if (DocumentType == "Excel")
            {
                //防止出现乱码,加上这行可以防止在只有一行数据时出现乱码Gridview数据导出到Excel/Word <wbr>防止出现乱码
                HttpContext.Current.Response.Write("<meta http-equiv=Content-Type content=text/html;charset=UTF-8>");
                //Excel            
                HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(filename + ".xls", System.Text.Encoding.UTF8));
                HttpContext.Current.Response.ContentType = "application/ms-excel";
            }
            else if (DocumentType == "Word")
            {
                //防止出现乱码,加上这行可以防止在只有一行数据时出现乱码Gridview数据导出到Excel/Word <wbr>防止出现乱码
                HttpContext.Current.Response.Write("<meta http-equiv=Content-Type content=text/html;charset=UTF-8>");
                //Word
                HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(filename + ".doc", System.Text.Encoding.UTF8));
                HttpContext.Current.Response.ContentType = "application/ms-word";
            }


            HttpContext.Current.Response.Charset = "UTF-8";
            HttpContext.Current.Response.ContentEncoding = System.Text.Encoding.UTF8;


            //关闭控件的视图状态
            source.Page.EnableViewState = false;


            //初始化HtmlWriter
            System.IO.StringWriter writer = new System.IO.StringWriter();
            System.Web.UI.HtmlTextWriter htmlWriter = new System.Web.UI.HtmlTextWriter(writer);
            source.RenderControl(htmlWriter);


            //输出
            HttpContext.Current.Response.Write(writer.ToString());
            HttpContext.Current.Response.End();
        }


        public override void VerifyRenderingInServerForm(Control control)
        {


        }