Administrasjon.Controllers.AdminProductController.UniqueCategory C# (CSharp) Method

        private void UniqueCategory()
        {
            var uniqeCategories = new List<String>();
            var ProductList = _productBLL.getAllProducts();

            foreach (var c in ProductList)
            {
                if (!uniqeCategories.Contains(c.category))
                {
                    uniqeCategories.Add(c.category);
                }
            }
            ViewBag.uniqeCategories = uniqeCategories;
        }