public void CreateOrder(Order order)
        {
            if (order.Customer.Country == "AU")
            {
                order.Total = Convert.ToDecimal(order.Items.Sum(_ => _.Price) * 1.1);
            }
            else if (order.Customer.Country == "UK")
            {
                order.Total = Convert.ToDecimal(order.Items.Sum(_ => _.Price) * 1.2);
            }

            var dataContext = new OrderDataContext();

            dataContext.CreateOrder(order);
        }
        public IEnumerable <Order> GetOrdersByCustomerId(int id)
        {
            var dataContext = new OrderDataContext();

            return(dataContext.GetCustomerOrders(id));
        }