Interfaces

Question

Hi, I have an Interface and I have a Class:

 

namespace Demo

{

   public interface IAB

   {

      void Greet(); 

   } 

    

   public class AB

   {

      public void Hello(IAB e ) 

      {

          e.Greet();

      } 

   }

}

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The problem is how do I implement  the interface IAB as a parameter when I call the method Hello :

 

AB  ab = new  AB();

ab.Hello( how do I implement the interface inside here?  ) ;

 

I know how to do it in Java using anonymous classes or lambda expression. 

How can I do it in C#.

 

PLEASE HELP  .......