public IActionResult Add() { //LİSTELERİ OLUŞTUR, FOREACH İLE İÇLERİNİ DOLDUR List <SelectListItem> SelectCategory = new List <SelectListItem> { new SelectListItem(text: "Kategori Seçiniz", value: "") }; List <SelectListItem> SelectCompany = new List <SelectListItem> { new SelectListItem(text: "Firma Seçiniz", value: "") }; foreach (var item in ICategoryServices.CategoryListItem()) { SelectCategory.Add(new SelectListItem { Text = item.CategoryName, Value = item.ID.ToString() }); } foreach (var item2 in ICompanyServices.CompanyListItem()) { SelectCompany.Add(new SelectListItem { Text = item2.CompanyName, Value = item2.ID.ToString() }); } //LİSTELER TAMAM, MODELİ OLUŞTURUP İLGİLİ ALANLARA SETLE VİEW'A YOLLA ProductAddModel productAddModel = new ProductAddModel { CategorySelectList = SelectCategory, CompanySelecList = SelectCompany }; return(View(productAddModel)); }