public static bool IsValidType(CreditCardTypeId id)
{
if (id <= CreditCardTypeId.Unk)
{
return(false);
}
if (id > CreditCardTypeId.DinersClub)
{
return(false);
}
return(true);
}
public static string GetCardTestNumber(CreditCardTypeId cardType)
{
// Return a bogus CC number that passes Luhn and format tests for a given CreditCardTypeId
// Src: https://www.paypal.com/en_US/vhelp/paypalmanager_help/credit_card_numbers.htm
// Credit: Scott Dorman, http://www.geekswithblogs.net/sdorman
// According to PayPal, the valid test numbers that should be used
// for testing card transactions are:
// Credit Card Type Credit Card Number
// American Express 378282246310005
// American Express 371449635398431
// American Express Corporate 378734493671000
// Diners Club 30569309025904
// Diners Club 38520000023237
// Discover 6011111111111117
// Discover 6011000990139424
// MasterCard 5555555555554444
// MasterCard 5105105105105100
// Visa 4111111111111111
// Visa 4012888888881881
switch (cardType)
{
case CreditCardTypeId.Amex:
return("3782 822463 10005");
case CreditCardTypeId.Discover:
return("6011 1111 1111 1117");
case CreditCardTypeId.MasterCard:
return("5105 1051 0510 5100");
case CreditCardTypeId.Visa:
return("4111 1111 1111 1111");
case CreditCardTypeId.DinersClub:
return("30569309025904");
default:
return(null);
}
}
public static bool IsValidNumber(string cardNum)
{
// Determine the card type based on the number
cardNum = GetClean(cardNum);
CreditCardTypeId cardType = GetCardTypeFromNumber2(cardNum);
if (!IsValidType(cardType))
{
return(false);
}
if (!IsValidLength(cardNum.Length, cardType))
{
return(false);
}
// all cards use Luhn's alg
return(IsValidLuhn2(cardNum));
}
public static CreditCardTypeId GetCardTypeFromNumber2(string cardNum)
{
// Compare the supplied card number with the regex pattern and get reference regex named groups
// NOTE: this does not mean the card is valid format/length, just that it resembles a type.
// Assume clean cardNum.
GroupCollection gc = _cardRegex1.Value.Match(cardNum).Groups;
for (CreditCardTypeId id = CreditCardTypeId.Visa; id <= CreditCardTypeId.DinersClub; id++)
{
// Compare each card type to the named groups to determine which card type the number matches
if (gc[id.ToString()].Success)
{
return(id);
}
}
// Card type is not supported by our system, return null
return(CreditCardTypeId.Unk);
}
public static bool IsValidNumber2(string cardNum, CreditCardTypeId cardType)
{
// Assume clean cardNum.
if (!IsValidType(cardType))
{
return(false);
}
if (!IsValidLength(cardNum.Length, cardType))
{
return(false);
}
// Make sure the supplied number matches the supplied card type
if (!_cardRegex1.Value.Match(cardNum).Groups[cardType.ToString()].Success)
{
return(false); // The card number does not match the card type
}
// all cards use Luhn's alg
return(IsValidLuhn2(cardNum));
}
public static bool IsValidNumber(string cardNum, CreditCardTypeId cardType)
{
return(IsValidNumber2(GetClean(cardNum), cardType));
}
public static bool IsValidLength(int len, CreditCardTypeId cardType)
{
return(true);
}
