AdventureWorks.WebServices.Controllers.OrderController.ProcessOrder C# (CSharp) Метод

        public HttpResponseMessage ProcessOrder(int id, Order order)
        {
            if (order == null || id != order.Id)
            {
                return Request.CreateErrorResponse(HttpStatusCode.BadRequest, Resources.InvalidOrder);
            }

            if (ModelState.IsValid)
            {
                // This is where you would add custom business logic validation (check stock, approve transaction, etc)
                // for instance, validate the transaction before performing the purchase

                if (order.ShoppingCart.ShoppingCartItems.Count < 1)
                {
                    ModelState.AddModelError("order.ShoppingCart", Resources.InvalidShoppingCart);
                    return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
                }

                var result = order.PaymentMethod.CardNumber != "22222" ? "APPROVED" : string.Format(CultureInfo.CurrentCulture, "Invalid Payment Method. Reason: {0}", "DECLINED_CONTACT_YOUR_BANK");
                if (result == "APPROVED")
                {
                    // This is where you would process the order. It is omitted for simplicity of the back end service.
                    _orderRepository.Delete(order.Id);
                    return Request.CreateResponse();
                }
                else
                {
                    ModelState.AddModelError("order.PaymentMethod", result);
                }
            }

            // Only get here if there are ModelState errors
            return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
        }