static void Main(string[] args)
{
var subject = new Subject();
var observerA = new ConcreteObserverA();
subject.Attach(observerA);
var observerB = new ConcreteObserverB();
subject.Attach(observerB);
subject.SomeBusinessLogic();
subject.SomeBusinessLogic();
subject.Dettach(observerB);
subject.SomeBusinessLogic();
}
static void Main(string[] args)
{
var subject = new Subject();
var concreateObjectA = new ConcreteObserver();
subject.Add(concreateObjectA);
subject.SomeBusinessLogic();
Console.ReadLine();
}
static void Main(string[] args)
{
var rnd = new Random();
var subject = new Subject();
var observerA = new ConcreteObserverA();
int delay;
lock (rnd);
delay = rnd.Next(1, 1001);
Thread.Sleep(delay);
subject.Attach(observerA);
var observerB = new ConcreteObserverB();
subject.Attach(observerB);
subject.SomeBusinessLogic();
subject.SomeBusinessLogic();
subject.Detach(observerB);
subject.SomeBusinessLogic();
}