// How to generate IBAN:
Iban iban = new IbanBuilder()
                .CountryCode( CountryCode.GetCountryCode( "CZ" ) )
                .BankCode( "0800" )
                .AccountNumberPrefix( "000019" )
                .AccountNumber( "2000145399" )   
                .Build(); 

// iban.ToString() = CZ6508000000192000145399

// or with autopadding (supplement missing zeroes):
Iban iban = new IbanBuilder()
                .CountryCode( CountryCode.GetCountryCode( "CZ" ) )
                .BankCode( "800" )
                .AccountNumberPrefix( "19" )
                .AccountNumber( "2000145399" )   
                .Build(); 

// iban.ToString() = CZ6508000000192000145399

// disable autopadding:
Iban iban = new IbanBuilder()
                .CountryCode( CountryCode.GetCountryCode( "CZ" ) )
                .BankCode( "800" )
                .AccountNumberPrefix( "19" )
                .AccountNumber( "2000145399" )   
                .Build(true, false); 


// How to get an IBAN object from IBAN string:
Iban iban = Iban.CreateInstance( "CZ6508000000192000145399" );

// How to get IBAN string from the IBAN object:
string iban = Iban.CreateInstance( "CZ6508000000192000145399" ).ToString();


// How to validate IBAN:
try
{
    IbanUtils.Validate("CZ6508000000192000145399");
}
catch (IbanFormatException iex)
{
    // invalid
}

// Validation of IBAN without throwing an exception:
IbanFormatViolation validationResult = IbanFormatViolation.NO_VIOLATION;
if (IbanUtils.IsValid("CZ6508000000192000145399", out validationResult))
{
    // valid IBAN
}
else
{
    // invalid IBAN
    // validationResult contains reason of unsuccessful validation
}

// Check if IBAN is from SEPA member country
bool ibanFromSEPA = IbanUtils.IsFromSEPACountry("CZ5508000000001234567899"); // true

// Check if IBAN is from SEPA Eurozone (uses EUR as currency) member country
bool ibanWithEUR = IbanUtils.IsFromEurozoneSEPACountry("FI1410093000123458"); // true

// How to get an BIC object from string:
Bic testBic = Bic.CreateInstance( "DEUTDEFF500" );

// How to validate BIC:
try
{
    BicUtils.Validate("DEUTDEFF500");
}
catch (BicFormatException bex)
{
    // invalid
}

// Validation of BIC without throwing an exception:
BicFormatViolation validationResult = BicFormatViolation.NO_VIOLATION;
if (BicUtils.IsValid("DEUTDEFF500", out validationResult))
{
    // valid BIC
}
else
{
    // invalid BIC
    // validationResult contains reason of unsuccessful validation
}