C# Constants:

const readonly int CRED_TYPE_GENERIC = 1;

const readonly int CRED_TYPE_DOMAIN_PASSWORD = 2;

const readonly int CRED_TYPE_DOMAIN_CERTIFICATE = 3;

const readonly int CRED_TYPE_DOMAIN_VISIBLE_PASSWORD = 4;

const readonly int CRED_TYPE_MAXIMUM = 5; // Maximum supported cred type

VB Constants:

Public Enum CRED_TYPE
   GENERIC = 1
   DOMAIN_PASSWORD
   DOMAIN_CERTIFICATE
   DOMAIN_VISIBLE_PASSWORD
   MAXIMUM      
End Enum