Retrieving Even-Numbered Events with the .NET Delegate Convention : delegate event « delegate « C# / CSharp Tutorial

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C# / CSharp Tutorial » delegate » delegate event 
9.8.8.Retrieving Even-Numbered Events with the .NET Delegate Convention
using System;
   
public delegate void EvenNumberHandler(object Originator, OnEvenNumberEventArgs EvenNumberEventArgs);
   
class Counter
{
    public event EvenNumberHandler OnEvenNumber;
   
    public Counter()
    {
        OnEvenNumber = null;
    }
   
    public void CountTo100()
    {
        int CurrentNumber;
   
        for(CurrentNumber = 0; CurrentNumber <= 100; CurrentNumber++)
        {
            if(CurrentNumber % == 0)
            {
                if(OnEvenNumber != null)
                {
                    OnEvenNumberEventArgs EventArguments;
   
                    EventArguments = new OnEvenNumberEventArgs(CurrentNumber);
                    OnEvenNumber(this, EventArguments);
                }
            }
        }
    }
}
   
public class OnEvenNumberEventArgs : EventArgs
{
    private int EvenNumber;
   
    public OnEvenNumberEventArgs(int EvenNumber)
    {
        this.EvenNumber = EvenNumber;
    }
   
    public int Number
    {
        get
        {
            return EvenNumber;
        }
    }
}
   
class EvenNumberHandlerClass
{
    public void EvenNumberFound(object Originator, OnEvenNumberEventArgs EvenNumberEventArgs)
    {
        Console.WriteLine(EvenNumberEventArgs.Number);
    }
}
   
class MainClass
{
    public static void Main()
    {
        Counter MyCounter = new Counter();
        EvenNumberHandlerClass MyEvenNumberHandlerClass = new EvenNumberHandlerClass();
        MyCounter.OnEvenNumber += new EvenNumberHandler(MyEvenNumberHandlerClass.EvenNumberFound);
        MyCounter.CountTo100();
    }
}
9.8.delegate event
9.8.1.Creating a new event.
9.8.2.delegate and event
9.8.3.A very simple event demonstration.
9.8.4.An event multicast demonstration
9.8.5.Individual objects receive notifications when instance event handlers are used
9.8.6.A static method is used as an event handler
9.8.7.Creating an event.
9.8.8.Retrieving Even-Numbered Events with the .NET Delegate Convention
9.8.9.Retrieving Even-Numbered Events
9.8.10.Advanced Event
9.8.11.Using The Event Keyword
9.8.12.delegate and Event handler
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