private void btnOrder_Click(object sender, EventArgs e)
{
IPayment paymentData = paymentFactory.CreatePayment(cboxPayment.SelectedIndex);
IOrder orderData = orderFactory.CreateOrder(cboxOrder.SelectedIndex);
String message = "";
foreach (var orderItem in order)
{
message += orderItem.Quantity().ToString() + " x " + orderItem.ProductName() + "\n";
}
message += paymentData.Feedback() + "\n";
message += orderData.Feedback() + "\n";
MessageBox.Show(message);
order.Clear();
message = "";
refresh();
cboxOrder.SelectedIndex = 0;
cboxPayment.SelectedIndex = 0;
}