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());
        }