Reference an object by interface and class : Object Reference : Class C# Examples

Reference an object by interface and class

You can create an interface reference variable.
Such a variable can refer to any object that implements its interface.
When you call a method on an object through an interface reference, the method is the version of the method implemented by the object.





    
public  interface  Player
{
  void  PlayMusic();
}

public  class  Student  :  Player
{
  public  void  PlayMusic(){}
  public  void  DoALittleDance(){}
}

public  class  MainClass
{
      static  void  Main()
      {
            Student  st  =  new  Student();
            Player  musician  =  st;

            musician.PlayMusic();
            st.PlayMusic();
            st.DoALittleDance();
      }
}
    
   
  
   

Related in same category :
• Declare class fields and methods
• Declare a House object reference named myHouse
• Creating a House object and assigning its memory location to myHouse
• Assign values to the House object's fields using object renerence
• Display the field values using object reference
• Declare another House object reference and create another House object
• Change the object referenced by the myHouse object reference to the object referenced by yourHouse
• Reference type equals
• Reference equals
• Reference a static member function without using the class name
• Overridden Equals()
• Pass reference type variable without 'out' and 'ref'
• Use interface as reference
• Reference one object by multiple interfaces