static void Main(string[] args)
{
Subject s = new Subject();
Observer o1 = new Observer(s);
Observer o2 = new Observer(s);
s.DoSomething();
Console.ReadLine();
}
static void Main()
{
var rnd = new Random();
var subject = new Subject();
var observerA = new ConcreteObserverA();
var observerB = new ConcreteObserverB();
Parallel.For(0, 5, (i, loopState) =>
{
int delay;
lock (rnd)
delay = rnd.Next(1, 1001);
Thread.Sleep(delay);
Console.WriteLine("Thread : " + i);
subject.Attach(observerA);
subject.DoSomething();
subject.Detach(observerB);
});
}