public class Shape{
 
 	// A few example members
 	public int X { 
		get;
		private set; 
 	}	
 
 	public int Y { 
		get;
		private set;
	}
 
	public int Height { 
		get;
		set;
	}
 
	public int Width { 
		get;
		set;
	}
 
    // Virtual method
    public virtual void Draw(){
		Console.WriteLine("Performing base class drawing tasks");
    }
}
 
class Circle : Shape{
 
	//Override the Draw method in the Circle Class
	public override void Draw(){
       // Code to draw a circle...
       Console.WriteLine("Drawing a circle");
       base.Draw();
    }
}