using System;

public class Program

{

    public static void Main()

    {

        ChildRecord child = new ChildRecord(16, 4);

        Console.WriteLine(child.RecordTypeId);

        Console.WriteLine(child.RecordId);

    }

}

​

public class BaseRecord

{

    public int RecordTypeId { get; protected set; }

}

​

public class ChildRecord : BaseRecord

{

    public int RecordId { get; set; }

​

    public ChildRecord( int recordTypeId, int recordId )

    {

        RecordTypeId = recordTypeId;

        RecordId = recordId;

    }

}