using System;

​

​

namespace Example

{

    interface IA

    {

        string Message { get; }

    }

    interface IB

    {

        string Message { get; }

    }

    class A : B, IA

    {

        string IA.Message { get { return "Foo"; }}

    }

    class B : IB

    {

        string IB.Message { get { return "Bar"; }}

    }

    public class Program

    {

        public static void Main()

        {

            IA a = new A();

            IB b = a as IB;

            Console.WriteLine(a.Message);

            Console.WriteLine(b.Message);

        }

    }

}