using System;

​

public class Program

{

    public static void Main()

    {

        Foo foo = new Bar();

        foreach(var prop in foo.GetType().GetProperties())

        {

            Console.WriteLine("{0}={1}", prop.Name, prop.GetValue(foo, null));

        }

        IFoo ifoo = new Bar();

        foreach(var prop in foo.GetType().GetProperties())

        {

            Console.WriteLine("{0}={1}", prop.Name, prop.GetValue(ifoo, null));

        }

    }

    public class Foo : IFoo { public int Id { get; set; } }

    public class Bar : Foo { public string Name { get; set; } }

    public interface IFoo { int Id { get; set; } }

}