Mega Code Archive

 

Categories / C# / Language Basics

 

Operators and Expressions

/* A Programmer's Introduction to C# (Second Edition) by Eric Gunnerson Publisher: Apress  L.P. ISBN: 1-893115-62-3 */ // 14 - Operators and Expressions\Type operators\Is // copyright 2000 Eric Gunnerson using System; interface IAnnoy {     void PokeSister(string name); } class Brother: IAnnoy {     public void PokeSister(string name)     {         Console.WriteLine("Poking {0}", name);     } } class BabyBrother { } public class TypeoperatorsIs {     public static void AnnoyHer(string sister, params object[] annoyers)     {         foreach (object o in annoyers)         {             if (o is IAnnoy)             {                 IAnnoy annoyer = (IAnnoy) o;                 annoyer.PokeSister(sister);             }         }     }     public static void Main()     {         TestoperatorsIs.AnnoyHer("Jane", new Brother(), new BabyBrother());     } }