(C#) Get Certificate Subject Part by Name or OID

Demonstrates the GetSubjectPart method where a name or OID can be passed.

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Chilkat.Cert cert = new Chilkat.Cert();

bool success = cert.LoadByCommonName("myCert");
if (success == false) {
    Debug.WriteLine(cert.LastErrorText);
    return;
}

// This example demonstrates getting the SERIALNUMBER part of the subject,
// if one such part exists in the cert's subject.
// Not too many certicates include the serial number in the Subject.
// (Chilean issued certificates for SII is one such case where the SERIALNUMBER part exists within the Subject.)
string serialNum = cert.GetSubjectPart("SERIALNUMBER");
if (cert.LastMethodSuccess == false) {
    Debug.WriteLine("No SERIALNUMBER part exists.");
    return;
}

Debug.WriteLine(serialNum);

// We could also get the part by the OID.
// See https://oidref.com/2.5.4.5 for a list of OID's in the 2.5.4.* range..
// The OID for SERIALNUMBER is "2.5.4.5"
serialNum = cert.GetSubjectPart("2.5.4.5");
if (cert.LastMethodSuccess == false) {
    Debug.WriteLine("No SERIALNUMBER part exists.");
    return;
}

Debug.WriteLine(serialNum);