private static bool ValidateCard(IInternalCashCard card, string cardNo, int pin)
{
return(card != null && card.CardNo.Equals(cardNo) && card.Pin == pin);
}
public JointAccount(string accountNo, decimal currentBalance, IInternalCashCard cashCard1, IInternalCashCard cashCard2)
{
AccountNo = accountNo;
CurrentBalance = currentBalance;
Cards = new Tuple <IInternalCashCard, IInternalCashCard>(cashCard1, cashCard2);
}
