// The user will set the PaymentStrategy by
// calling this method at runtime
public void SetPaymentStrategy(IPaymentStrategy strategy)
{
this.PaymentStrategy = strategy;
}
public void CheckOut(IPaymentStrategy paymentMethod)
{
Display();
paymentMethod.Pay(_totalAmount);
GoodsList.Clear();
}
public void SetPaymentStrategy(IPaymentStrategy paymentStrategy)
{
this.paymentStrategy = paymentStrategy;
}