using System; using System.Collections; using System.Collections.Generic; using System.IO; using System.Linq; using System.Runtime.Serialization.Formatters.Binary; using System.Text; namespace ConsoleApplication2 { interface IBbb { void Fb(); } class Aaa : IBbb { public void Fb() { Console.WriteLine("aaa fb"); } void IBbb.Fb() { Console.WriteLine("ibbb fb"); } } internal class Program { public static void Main(string[] args) { IBbb oa = new Aaa(); oa.Fb(); Aaa oc=new Aaa(); oc.Fb(); } } }