public ActionResult Index() { var commonInfo = LocationDAO.GetCommonInfoByID("commoninfo"); var lstBrand = BrandModel.GetAllBrand(); var lstPhoneModel = new List <PhoneModelBO>(); foreach (var item in lstBrand) { var result = BrandModel.GetPhoneModelByBrandID(item.id); if (result != null) { lstPhoneModel.AddRange(result); } } ViewBag.ListBrand = lstBrand; ViewBag.ListModel = lstPhoneModel; ViewBag.CommonInfo = commonInfo; return(View()); }