public ActionResult Create(CarModelViewModel car) { var Model = repository.CheckDuplicate(car.Title); if (Model) { var list = manufactureRepository.GetList() .Select(x => new SelectListItem { Text = x.Title, Value = x.ID.ToString() }).ToList(); list.Insert(0, new SelectListItem { Value = "", Text = "انتخاب نمایید" }); ViewBag.ManufactureList = list; ViewBag.ErrorMessage = "عنوان وارد شده تکراریست"; return(View()); } repository.Create(car); return(RedirectToAction("Index")); }