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class TimeInfoEventArgs:EventArgs
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{
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public readonly int hour;
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public readonly int minute;
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public readonly int second;
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public TimeInfoEventArgs(int hour,int minute,int second)
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{
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this.hour = hour;
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this.minute = minute;
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this.second = second;
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}
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}
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class Clock
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{
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private int hour;
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private int minute;
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private int second;
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public delegate void SecondChangedHandler(object clock,TimeInfoEventArgs timeInfomation);
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public event SecondChangedHandler OnSecondChange;
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public void Run()
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{
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for (; ; )
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{
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Thread.Sleep(10);
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System.DateTime dt = System.DateTime.Now;
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if(dt.Second!=second)
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{
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TimeInfoEventArgs timeInformation = new TimeInfoEventArgs(dt.Hour, dt.Minute, dt.Second);
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if(OnSecondChange!=null)
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{
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OnSecondChange(this, timeInformation);
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}
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}
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this.second = dt.Second;
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this.minute = dt.Minute;
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this.hour = dt.Hour;
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}
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}
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}
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class DisplayClock
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{
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public void Subscribe(Clock theClock)
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{
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theClock.OnSecondChange+=new Clock.SecondChangedHandler(TimeHasChanged);
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}
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public void TimeHasChanged(object theClock,TimeInfoEventArgs ti)
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{
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Console.WriteLine("Current Time:{0}:{1}:{2} ",ti.hour.ToString(),ti.minute.ToString(),ti.second.ToString());
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}
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}
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class LogCurrentTime
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{
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public void subscribe(Clock theClock)
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{
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theClock.OnSecondChange+=new Clock.SecondChangedHandler(WriteLogEntry);
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}
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public void WriteLogEntry(object theClock,TimeInfoEventArgs ti)
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{
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Console.WriteLine("Logging to file: {0}:{1}:{2}\n",ti.hour.ToString(),ti.minute.ToString(),ti.second.ToString());
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}
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}
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class Program
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{
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static void Main(string[] args)
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{
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Clock theClock = new Clock();
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DisplayClock dc = new DisplayClock();
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dc.Subscribe(theClock);
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LogCurrentTime lct = new LogCurrentTime();
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lct.subscribe(theClock);
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theClock.Run();
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}
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}
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