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Categories / C# Book / 01 Language Basics
 

0166 virtual interface implementation

To open the possibility for subclass to reimplement members from interface we can add virtual keyword to the implementation. using System; interface Printable{ void print(); } class Shape : Printable{ public virtual void print(){ Console.WriteLine("shape"); } } class Rectangle : Shape{ public override void print(){ Console.WriteLine("rectangle"); } } class Test { static void Main() { Shape s = new Shape(); s.print(); Rectangle r = new Rectangle(); r.print(); } } The output: shape rectangle