public ActionResult Index() { ViewBag.parenttypes = ListToSelect(ProductCategoryService.GetFirstList().Select(o => new SelectListItem() { Value = o.CategorySN.ToString(), Text = o.Title }), emptyTitle: "全部"); //ViewBag.suppliers = ListToSelect(SupplierService.GetList().Where(o => o.BusinessType == 1).Select(o => new SelectListItem() { Value = o.Id, Text = o.Title }), emptyTitle: "全部"); ViewBag.brands = ListToSelect(BrandService.GetList().Select(o => new SelectListItem() { Value = o.BrandSN.ToString(), Text = o.Title }), emptyTitle: "全部"); return(View()); }