public static void CompleteOrder(Guid orderId)
        {
            var db    = new PapaBobs3DbEntities();
            var order = db.Orders.FirstOrDefault(p => p.OrderId == orderId);

            order.Completed = true;
            db.SaveChanges();
        }
        public static void CreateOrder(DTO.OrderDTO orderDTO)
        {
            var db = new PapaBobs3DbEntities();


            var order = convertToEntity(orderDTO);

            db.Orders.Add(order);
            db.SaveChanges();
        }