| public static IsCreditCardAmericanExpress ( this creditCard ) : bool | ||
| creditCard | this | The credit card. |
| return | bool | |
public static bool IsCreditCardAmericanExpress(this string creditCard)
{
if (CreditPassesFormatCheck(creditCard))
{
creditCard = CleanCreditCardNumber(creditCard);
return Regex.IsMatch(creditCard, RegexPattern.CREDIT_CARD_AMERICAN_EXPRESS);
}
return false;
}
