public ActionResult Create(Car car)
        {
            if (ModelState.IsValid)
            {
                db.Cars.Add(car);
                db.SaveChanges();
                return RedirectToAction("Index");
            }
            ViewBag.BrandID = new SelectList(db.Brands, "BrandID", "CarBrand", car.BrandID);

            return View(car);
        }
        public void AddToCart(Car car)
        {
            var cartItem = storeDB.Carts.SingleOrDefault(c => c.CartId == ShoppingCartId
                                                              && c.CarID == car.CarID);

            if (cartItem == null)
            {
                cartItem = new Cart
                {
                    CarID = car.CarID,
                    CartId = ShoppingCartId,
                    Count = 1,
                    DateCreated = DateTime.Now
                };
                storeDB.Carts.Add(cartItem);
            }
            else
            {
                cartItem.Count ++;
            }
            storeDB.SaveChanges();
        }
 public ActionResult Edit(Car car)
 {
     if (ModelState.IsValid)
     {
         db.Entry(car).State = EntityState.Modified;
         db.SaveChanges();
         return RedirectToAction("Index");
     }
     ViewBag.BrandID = new SelectList(db.Brands, "BrandID", "CarBrand", car.BrandID);
     return View(car);
 }