Reference one object by multiple interfaces : Object Reference « Class « C# / CSharp Tutorial

1. C# / CSharp Tutorial
2. Class
3. Object Reference

using System;

interface Interface1 {
      void PrintOut(string s);
}

interface Interface2 {
      void PrintOut(string s);
}

class MyClass : Interface1, Interface2
{
   public void PrintOut(string s)
   {
      Console.WriteLine(s);
   }
}

class MainClass
{
   static void Main()
   {
      MyClass mc = new MyClass();
      Interface1 ifc1 = (Interface1)mc;
      Interface2 ifc2 = (Interface2)mc;

      mc.PrintOut("object.");
      ifc1.PrintOut("interface 1.");
      ifc2.PrintOut("interface 2.");
   }
}

object.
interface 1.
interface 2.