问导出excel报表

EN

  public ActionResult ExportToExcel()
        {
            if (!General.ValidateSession())
            {
                return RedirectToAction("Login", "User");
            }
            string fDate = TempData["FromDate"].ToString();
            string tDate = TempData["toDate"].ToString();
            var grdview = new GridView();
            grdview.DataSource = this.GetList();
            grdview.DataBind();
            Response.ClearContent();
            Response.Buffer = true;
            Response.AddHeader("content-disposition", "attachment; filename= " + fDate + " - " + tDate + ".xls ");
            Response.ContentType = "application/ms-excel";
            Response.Charset = "";
            StringWriter strWriter = new StringWriter();
            HtmlTextWriter htmlWriter = new HtmlTextWriter(strWriter);
            grdview.RenderControl(htmlWriter);
            Response.Output.Write(strWriter.ToString());
            Response.Flush();
            Response.End();
            return RedirectToAction("DateRecords");
        }