private static bool isValid(string iban)
{
if (hasValidFormat(iban))
{
string ibanCountryCode = iban.Substring(0, 2);
string ibanCheckDigits = iban.Substring(2, 2);
string ibanBban = iban.Substring(4);
string checkSequence = ibanBban + ibanCountryCode + ibanCheckDigits;
string digitSequence = String.Empty;
if (CharacterConverter.Convert(checkSequence, out digitSequence))
{
//Console.WriteLine("\nCheck string: {0}", checkSequence);
//Console.WriteLine("\nValidation string: {0}", digitSequence);
return(Modulus97.ValidateCheckDigits(digitSequence));
}
}
return(false);
}
private static bool isValid(string reference)
{
if (hasValidFormat(reference))
{
string referenceIdentifier = reference.Substring(0, 2);
string checkDigits = reference.Substring(2, 2);
string referenceSequence = reference.Substring(4);
string checkSequence = referenceSequence + referenceIdentifier + checkDigits;
string digitSequence = String.Empty;
//International reference number may contain both upper and lower case characters
//From validation point of view case is insignificant, digit values are the same for upper and lower case
//Conversion is done in upper case
if (CharacterConverter.Convert(checkSequence.ToUpper(), out digitSequence))
{
//Console.WriteLine("\nCheck string: {0}", checkSequence);
//Console.WriteLine("\nValidation string: {0}", digitSequence);
return(Modulus97.ValidateCheckDigits(digitSequence));
}
}
return(false);
}