Question

I have a query related to relation between objects.

Scenario:

Payment Details –
a. Credit Card
b. Saving Account
c. Cheque

Now, a customer should have any of the above payment detail before buying any product. How do i relate payment detail with customer.

Can any one explain with example…

Thanks in advance.

Answer 1

public interface IPaymentType 
{
  bool Pay(double amount);
}

public class CreditCardPType : IPaymentType
{
  double limit;
  // implement Pay()
}    
public class Cheque: IPaymentType
{
  int accountNumber;
  // implement Pay()
} 

public class Customer
{
    public IPaymentType paymentType { get; set; }
}


Customer customer = new Customer();
customer.paymentType = new CreditCardPType();