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
                {
                    ItemId= item.ItemId,
                    OrderId = order.OrderId,
                    UnitPrice = item.ElectronicsMenu.Price,
                    Quantity = item.Count
                };
                // Set the order total of the shopping cart
                orderTotal += (item.Count * item.ElectronicsMenu.Price);

                electronicsDB.OrderDetails.Add(orderDetail);

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

            // Save the order
            electronicsDB.SaveChanges();
            // Empty the shopping cart
            EmptyCart();
            // Return the OrderId as the confirmation number
            return order.OrderId;
        }
        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
                    electronicsDB.Orders.Add(order);
                    electronicsDB.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);
            }
        }