public static void Main_observer_V32(string[] args)
{
ICricketFactory iFactory = new CricketFactory();
// Create objects for testing
ICricketObserver iAverageScoreDisplay = iFactory.CreateAverageScoreDisplay();
iAverageScoreDisplay.Notify += AverageScoreDisplay_Notify;
ICricketObserver iCurrentScoreDisplay = iFactory.CreateCurrentScoreDisplay();
iCurrentScoreDisplay.Notify += CurrentScoreDisplay_Notify;
// Create Cricket Subject and pass initial data
ICricketSubject cricketSubject = iFactory.CreateCicketSubject(
(o) => {
o.Runs = 100;
o.Wickets = 3;
o.Overs = 22.3f;
});
ICricketSubject iCricketSubject = cricketSubject;
iCricketSubject.Subscribed += CricketSubject_Subscribed;
//Register display elements
iCricketSubject.Subscribe(iCurrentScoreDisplay);
iCricketSubject.Subscribe(iAverageScoreDisplay);
//In real app you would have some logic to
//call this function when data changes
iCricketSubject.Update();
//Remove an observer
iCricketSubject.UnSubscribed += CricketSubject_UnSubscribed;
iCricketSubject.UnSubscribe(iAverageScoreDisplay);
cricketSubject.Next(
(o) =>
{
o.Runs = 135;
o.Wickets = 4;
o.Overs = 26.2f;
});
iCricketSubject = cricketSubject;
// Now only currentScoreDisplay gets the notification
iCricketSubject.Update();
Console.ReadKey();
}
public void UnRegister(ICricketObserver observer)
{
Observers.Remove(observer);
}
public void Register(ICricketObserver observer)
{
Observers.Add(observer);
}
public void Subscribe(ICricketObserver observer)
{
Observers.Add(observer);
OnSubscribe();
}
public void UnSubscribe(ICricketObserver observer)
{
Observers.Remove(observer);
OnUnSubscribe();
}
