One interface can inherit another. : Interface hierarchy : Class C# Examples

    
using  System;  
  
public  interface  BaseInterface  {  
    void  meth1();  
    void  meth2();  
}  
  
//  BaseInterface  now  includes  meth1()  and  meth2()  --  it  adds  meth3().  
public  interface  BaseInterface2  :  BaseInterface  {  
    void  meth3();  
}  
  
//  This  class  must  implement  all  of  BaseInterface  and  BaseInterface  
class  MyClass  :  BaseInterface2  {  
    public  void  meth1()  {  
        Console.WriteLine("Implement  meth1().");  
    }  
  
    public  void  meth2()  {  
        Console.WriteLine("Implement  meth2().");  
    }  
  
    public  void  meth3()  {  
        Console.WriteLine("Implement  meth3().");  
    }  
}  
  
class  MainClass  {  
    public  static  void  Main()  {  
        MyClass  ob  =  new  MyClass();  
  
        ob.meth1();  
        ob.meth2();  
        ob.meth3();  
    }  
}