public void CompleteOrder(long orderId)
        {
            Order order = OrderInformationDao.GetOrderById(orderId);

            order.DeliveryDate = DateTime.Now;
            order.Status       = Order.OrderState.DELIVERED;
            OrderManagementDao.SaveOrUpdate(order);
        }
        public void MarkOrderSent(long orderId)
        {
            Order order = OrderInformationDao.GetOrderById(orderId);

            order.Status   = Order.OrderState.SENT;
            order.SentDate = DateTime.Now;
            OrderManagementDao.SaveOrUpdate(order);
        }