public ActionResult RenderToExcel2(PubPage fg) { string sql = "select * from SystemUser"; var dt = _iSysUserServices.ToDataTable(sql, null); NpoiHelper.ExportExcel(dt, "用户信息" + DateTime.Now.ToString("yyyy-MM-dd") + ".xls"); return(Content("")); //return File("application/vnd.ms-excel", "用户信息" + DateTime.Now.ToString("yyyy-MM-dd") + ".xls"); }