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Categories / C# Tutorial / Delegate

 

Retrieving Even-Numbered Events

using System;     public delegate void EvenNumberHandler(int Number);     class Counter {     public event EvenNumberHandler OnEvenNumber;         public Counter()     {         OnEvenNumber = null;     }         public void CountTo100()     {         int CurrentNumber;             for(CurrentNumber = 0; CurrentNumber <= 100; CurrentNumber++)         {             if(CurrentNumber % 2 == 0)             {                 if(OnEvenNumber != null)                 {                     OnEvenNumber(CurrentNumber);                 }             }         }     } }     class EvenNumberHandlerClass {     public void EvenNumberFound(int EvenNumber)     {         Console.WriteLine(EvenNumber);     } }     class MainClass {     public static void Main()     {         Counter MyCounter = new Counter();         EvenNumberHandlerClass MyEvenNumberHandlerClass = new EvenNumberHandlerClass();         MyCounter.OnEvenNumber += new EvenNumberHandler(MyEvenNumberHandlerClass.EvenNumberFound);         MyCounter.CountTo100();     } }