System.IO.StringWriter SW = new System.IO.StringWriter();
            System.Web.UI.HtmlTextWriter HTW = new System.Web.UI.HtmlTextWriter(SW);
            Page.RenderControl(HTW);
            //Page为要导出的对象,当前是Page,如果是DataGrid,DataList等都可以
            Response.Buffer = true;
            Response.Clear();
            Response.ClearContent();
            Response.ClearHeaders();
            Response.ContentType = "Response.ContentType";
            //Response.ContentType是输出流的 HTTP MIME 类型
            //Response.ContentType      --- word文件
            //application/vnd.ms-excel --- excel文件
            //
            Response.Charset = "utf-8";
            Response.ContentEncoding = System.Text.Encoding.GetEncoding("utf-8");
            Response.AddHeader("Content-Disposition", "attachment;filename=XXX.doc");
            //attachment --- 作为附件下载
            //inline --- 在线打开
            //filename如过是中文,则可以用HttpUtility.UrlEncode(fileName,System.Text.Encoding.UTF8)
            //进行进行编码,以解决文件名乱码的问题
            Response.Write(SW.ToString());
            Response.Flush();
            Response.Close();