mvc 导出excel

 #region 导出new方法
        [NonAction]
        protected string RenderViewToString(Controller controller, string viewName, string masterName)
        {
            IView view = ViewEngines.Engines.FindView(controller.ControllerContext, viewName, masterName).View;
            using (StringWriter writer = new StringWriter())
            {
                ViewContext viewContext = new ViewContext(controller.ControllerContext, view, controller.ViewData, controller.TempData, writer);
                viewContext.View.Render(viewContext, writer);
                return writer.ToString();
            }
        }

        [NonAction]
        protected string RenderPartialViewToString(Controller controller, string partialViewName)
        {
            IView view = ViewEngines.Engines.FindPartialView(controller.ControllerContext, partialViewName).View;
            using (StringWriter writer = new StringWriter())
            {
                ViewContext viewContext = new ViewContext(controller.ControllerContext, view, controller.ViewData, controller.TempData, writer);
                ViewContext viewContext1 = new ViewContext(controller.ControllerContext, view, controller.ViewData, controller.TempData, writer);
                viewContext.View.Render(viewContext, writer);
                viewContext.View.Render(viewContext1, writer);
                return writer.ToString();
            }
        }

        public ActionResult Export(BookRequest request)
        {
            request.OrgId = this.CookieContext.OrgId;
            var resultList = HosService.GetWXPayReconciliation(request);
            ViewBag.NoPaging = true;
            ViewData.Model = resultList;
            string viewHtml = RenderPartialViewToString(this, "IndexDataList");
            return File(System.Text.Encoding.UTF8.GetBytes(viewHtml), "application/ms-excel", string.Format("ccpi_{0}.xls", Guid.NewGuid()));
        }
        #endregion