/// <summary>
/// Calculates the check digit for a given account number.
/// </summary>
/// <param name="accountNumber">The account number.</param>
/// <returns></returns>
virtual public string CalculateCheckDigit(string accountNumber)
{
var calculatedCheckDigit = ValidationMethodsTools.CalculateModulo(accountNumber, 97).ToString();
Log.InfoFormat("Check digits for number {0} are {1}", accountNumber, calculatedCheckDigit);
return(calculatedCheckDigit);
}
/// <summary>
/// converts the parts of a national account number to an IBAN.
/// There are different parts needed in dependency of the selected country
/// </summary>
/// <param name="nationalAccountNumber">The national account number.</param>
/// <returns></returns>
public override string ToIBAN(NationalAccountNumber nationalAccountNumber)
{
if (nationalAccountNumber == null)
{
throw new ArgumentNullException("nationalAccountNumber");
}
var abAccountNumber = CreateInstance(nationalAccountNumber);
var bankCode = OnlyAllowedCharacters(abAccountNumber.BankCode);
var accountNumber = OnlyAllowedCharacters(abAccountNumber.AccountNumber);
var branch = OnlyAllowedCharacters(abAccountNumber.Branch);
var holdersNationalId = OnlyAllowedCharacters(abAccountNumber.HoldersNationalId);
if (String.IsNullOrEmpty(bankCode))
{
throw new ArgumentException("The bank code is missing.");
}
if (String.IsNullOrEmpty(branch))
{
throw new ArgumentException("The branch code is missing.");
}
if (String.IsNullOrEmpty(accountNumber))
{
throw new ArgumentException("The account number is missing.");
}
if (String.IsNullOrEmpty(holdersNationalId))
{
throw new ArgumentException("The holders national id is missing.");
}
var bban = String.Format(BBANFormatString, bankCode, branch, accountNumber, holdersNationalId);
bban = bban.Replace(' ', '0');
bban = ConvertCharactersToNumbers(bban);
Log.DebugFormat("calculating checksum for bban {0}", bban);
var modulo = 98 - ValidationMethodsTools.CalculateModulo(bban, 97);
var iban = String.Format(IBANFormatString, IBANPrefix, modulo, bankCode, branch, accountNumber, holdersNationalId);
iban = iban.Replace(' ', '0');
Log.DebugFormat("generated IBAN: {0}", iban);
if (iban.Length != IBANLength)
{
throw new InvalidOperationException(String.Format("Couldn't generate a valid IBAN from the bankcode {0}, branch {1}, the account number {2} and the national holders id {3}.", bankCode, branch, accountNumber, holdersNationalId));
}
return(iban);
}
/// <summary>
/// Determines whether the specified account number is valid.
/// </summary>
/// <param name="accountNumber">The account number.</param>
/// <returns>
/// <c>true</c> if the specified account number is valid; otherwise, <c>false</c>.
/// </returns>
virtual public bool IsValid(string accountNumber)
{
string number;
string checkdigit;
ValidationMethodsTools.SplitNumber(accountNumber, 2, out number, out checkdigit);
var calculatedCheckDigit = ValidationMethodsTools.CalculateModulo(number, 97).ToString("00");
Log.InfoFormat("Validate {0} against check digits {1}, calculated check digits {2}", number, checkdigit, calculatedCheckDigit);
return(calculatedCheckDigit.Equals(checkdigit));
}
/// <summary>
/// converts the parts of a national account number to an IBAN.
/// There are different parts needed in dependency of the selected country
/// </summary>
/// <param name="nationalAccountNumber">The national account number.</param>
/// <returns></returns>
public override string ToIBAN(NationalAccountNumber nationalAccountNumber)
{
if (nationalAccountNumber == null)
{
throw new ArgumentNullException("nationalAccountNumber");
}
var abAccountNumber = CreateInstance(nationalAccountNumber);
var bic = OnlyAllowedCharacters(abAccountNumber.BIC);
var accountNumber = OnlyAllowedCharacters(abAccountNumber.AccountNumber);
if (String.IsNullOrEmpty(bic))
{
throw new ArgumentException("The bic is missing.");
}
if (String.IsNullOrEmpty(accountNumber))
{
throw new ArgumentException("The account number is missing.");
}
var bban = String.Format(BBANFormatString, bic, accountNumber);
bban = bban.Replace(' ', '0');
bban = ConvertCharactersToNumbers(bban);
Log.DebugFormat("calculating checksum for bban {0}", bban);
var modulo = 98 - ValidationMethodsTools.CalculateModulo(bban, 97);
var iban = String.Format(IBANFormatString, IBANPrefix, modulo, bic, accountNumber);
iban = iban.Replace(' ', '0');
Log.DebugFormat("generated IBAN: {0}", iban);
if (iban.Length != IBANLength)
{
throw new InvalidOperationException(String.Format("Couldn't generate a valid IBAN from the bic {0} and the account number {1}.", bic, accountNumber));
}
return(iban);
}
