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();

            // Iterate over the items in the cart, adding the order details for each
            foreach (var item in cartItems)
            {
                var orderDetail = new OrderDetail
                {
                    AlbumId = item.AlbumId,
                    OrderId = order.OrderId,
                    UnitPrice = item.Album.Price,
                    Quantity = item.Count
                };

                // Set the order total of the shopping cart
                orderTotal += (item.Count * item.Album.Price);

                storeDB.OrderDetails.Add(orderDetail);

            }

            // Set the order's total to the orderTotal count
            order.Total = orderTotal;

            // Save the order
            storeDB.SaveChanges();

            // Empty the shopping cart
            EmptyCart();

            // Return the OrderId as the confirmation number
            return order.OrderId;
        }