using System;

​

public abstract class AuditLog {

    public virtual string Id {get;set;} = Guid.NewGuid().ToString();

    public abstract string Type {get;}

}

​

public class DirectoryAuditLog : AuditLog {

    public override string Type {get;} = "DirectoryAuditLog";

}

​

public class SignInAuditLog : AuditLog {

    public override string Type {get;} = "SignInAuditLog";

}

​

public class TimeTracker : AuditLog {

    public override string Id {get;set;} = "TimeTracker";

    public override string Type {get;} = "TimeTracker";

}

​

public class Program

{

    public static void Main()

    {

        AuditLog d = new DirectoryAuditLog();

        AuditLog s = new SignInAuditLog();

        AuditLog t = new TimeTracker();

        Console.WriteLine($"{d.Id} - {d.Type}");

        Console.WriteLine($"{s.Id} - {s.Type}");

        Console.WriteLine($"{t.Id} - {t.Type}");

    }

}