public ActionResult AddressAndPayment(FormCollection values)
 {
     var order = new Order();
     TryUpdateModel(order);
     try
     {
         if (string.Equals(values["PromoCode"], PromoCode,
         StringComparison.OrdinalIgnoreCase) == false)
         {
             return View(order);
         }
         else
         {
             order.Username = User.Identity.Name;
             order.OrderDate = DateTime.Now;
             //Save Order
             storeDB.Orders.Add(order);
             storeDB.SaveChanges();
             //Process the order
             var cart = ShoppingCart.GetCart(this.HttpContext);
             cart.CreateOrder(order);
             return RedirectToAction("Complete",
             new { id = order.OrderId });
         }
     }
     catch
     {
         //Invalid - redisplay with errors
         return View(order);
     }
 }
        public int CreateOrder(Order order)
        {
            decimal orderTotal = 0;
            var cartItems = GetCartItems();

            foreach (var item in cartItems)
            {
                var orderDetail = new OrderDetail
                {
                    AlbumId = item.AlbumId,
                    OrderId = order.OrderId,
                    UnitPrice = item.Album.Price,
                    Quantity = item.Count
                };

                orderTotal += (item.Count * item.Album.Price);
            }
            order.Total = orderTotal;
            storeDB.SaveChanges();
            EmptyCart();
            return order.OrderId;
        }