public ActionResult Insert() { ViewBag.CategoryID = new SelectList(cats.GetActive(), "ID", "CategoryName", selectedValue: "0"); List <SelectListItem> lists = new List <SelectListItem>() { new SelectListItem() { Text = "Kategori Seçiniz", Value = "0" } }; ViewData["SubCategoryID"] = lists; ViewData["ThirdCategoryID"] = lists; ViewBag.BrandID = new SelectList(brs.GetActive(), "ID", "Name"); return(View()); }