// set the clock running it will raise an event for each new second
public void Run()
{
for (;;)
{
// sleep 100 milliseconds
Thread.Sleep(100);
// get the current time
System.DateTime dt = System.DateTime.Now;
// if the second has changed notify the subscribers
if (dt.Second != second)
{
// create the TimeInfoEventArgs object to pass to the subscriber
TimeInfoEventArgs timeInformation = new TimeInfoEventArgs(dt.Hour, dt.Minute, dt.Second);
// if anyone has subscribed, notify them
if (SecondChanged != null)
{
SecondChanged(this, timeInformation);
}
}
// update the state
this.second = dt.Second;
this.minute = dt.Minute;
this.hour = dt.Hour;
}
}
// this method should write to a file
// we write to the console to see the effect
// this object keeps no state
public void WriteLogEntry(object theClock, TimeInfoEventArgs ti)
{
Console.WriteLine("Logging to file: {0}:{1}:{2}",
ti.hour.ToString(), ti.minute.ToString(), ti.second.ToString());
}
// the method that implements the delegated functionality
public void TimeHasChanged(object theClock, TimeInfoEventArgs ti)
{
Console.WriteLine("Current Time: {0}:{1}:{2}",
ti.hour.ToString(), ti.minute.ToString(), ti.second.ToString());
}
private void TheClock_SecondChange(object clock, TimeInfoEventArgs timeInformation)
{
throw new NotImplementedException();
}