static void Main(string[] args)
{
Console.WriteLine("***Observer Pattern Demo***\n");
IObserver myObserver1 = new ObserverType1("Roy");
IObserver myObserver2 = new ObserverType1("Kevin");
IObserver myObserver3 = new ObserverType2("Bose");
Subject subject = new Subject();
subject.Register(myObserver1);
subject.Register(myObserver2);
subject.Register(myObserver3);
Console.WriteLine("Setting Flag = 5");
subject.Flag = 5;
subject.Unregister(myObserver1);
Console.WriteLine("\nSetting Flag = 50");;
subject.Flag = 50;
subject.Register(myObserver1);
Console.WriteLine("\nSetting Flag = 100");
subject.Flag = 100;
}
static void Main(string[] args)
{
Subject mySubject = new Subject();
IObserver myObserver1 = new Observer1();
IObserver myObserver2 = new Observer2();
// register observers
mySubject.Register(myObserver1);
mySubject.Register(myObserver2);
mySubject.Notify("message 1");
mySubject.Notify("message 2");
}
public ScoreObserver(Subject scoreGrabber)
{
this.scoreGrabber = scoreGrabber;
this.observerID = ++observerIDTracker;
scoreGrabber.Register(this);
Console.WriteLine("New Observer " + observerID + " created and registered");
}
public StockObserver(Subject stockGrabber)
{
_stockGrabber = stockGrabber;
_observerID = _observerIDTracker++;
Console.WriteLine("New Observer:" + _observerID);
stockGrabber.Register(this);
}
