This class has been deprecated and is no longer supported. Microsoft Passport Network has been replaced by Windows Live ID. For more information about how to use Windows Live ID to authenticate users in a Web application, see Windows Live ID SDK.
// Declare new PassportIdendity object as variable newPass.
System.Web.Security.PassportIdentity newPass = new System.Web.Security.PassportIdentity();
// Declare and set myURL variable = the URL of the appropriate Passport SignIn/SignOut Authority.string myURL = newPass.AuthUrl();