private void ConfirmOrderExecute()
        {
            try
            {
                OrderConfirmed = true;
                tblOrder newOrder = new tblOrder();
                newOrder.JMBG               = JMBG;
                newOrder.OrderStatus        = "W";
                newOrder.DateAndTimeOfOrder = DateTime.Now;

                newOrder = pizzaService.AddOrder(newOrder);

                foreach (var pizza in PizzaList)
                {
                    tblPizzaOrder pizzaOrder = new tblPizzaOrder();
                    pizzaOrder.PizzaID = pizza.tblPizza.ID;
                    pizzaOrder.OrderID = newOrder.ID;
                    pizzaOrder.Amount  = pizza.Amount;

                    pizzaService.AddPizzaOrder(pizzaOrder);
                }
                orderView.Close();
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
        }