Mega Code Archive
Using The Event Keyword
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using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
public class MyEventArgs : EventArgs
{
public readonly int Hour;
public readonly int Minute;
public readonly int Second;
public MyEventArgs(int hour, int minute, int second)
{
this.Hour = hour;
this.Minute = minute;
this.Second = second;
}
}
public delegate void MyHandler(object clock,MyEventArgs timeInformation);
public class Clock
{
private int hour;
private int minute;
private int second;
public event MyHandler SecondChanged;
protected virtual void OnSecondChanged(MyEventArgs e)
{
if (SecondChanged != null)
{
SecondChanged(this, e);
}
}
public void Run()
{
for (; ; )
{
System.DateTime dt = System.DateTime.Now;
if (dt.Second != second){
MyEventArgs timeInformation =new MyEventArgs(dt.Hour, dt.Minute, dt.Second);
OnSecondChanged(timeInformation);
}
this.second = dt.Second;
this.minute = dt.Minute;
this.hour = dt.Hour;
}
}
}
public class ConsoleHandler
{
public void Register(Clock theClock)
{
theClock.SecondChanged += new MyHandler(TimeHasChanged);
}
public void TimeHasChanged(object theClock, MyEventArgs ti)
{
Console.WriteLine("Current Time: {0}:{1}:{2}",ti.Hour.ToString(),ti.Minute.ToString(),ti.Second.ToString());
}
}
public class Test
{
public static void Main()
{
Clock theClock = new Clock();
ConsoleHandler dc = new ConsoleHandler();
dc.Register(theClock);
theClock.Run();
}
}
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