static void Main(string[] args)
{
Subject subject = new Subject();
ObserverClass observer1 = new ObserverClass("Observer1");
subject.Subscribe(observer1);
subject.Subscribe(new ObserverClass("Observer2"));
subject.InventoryCount++;
subject.Unsubscribe(observer1);
subject.Subscribe(new ObserverClass("Observer3"));
subject.InventoryCount++;
Console.ReadLine();
}
static void Main(string[] args)
{
Subject subject = new Subject(5);
// Observer1 takes a subscription to the store
var observer1 = new Observar("Observer 1");
subject.Subscribe(observer1);
// Observer2 also subscribes to the store
subject.Subscribe(new Observar("Observer 2"));
subject.Data++;
// Observer1 unsubscribes and Observer3 subscribes to notifications.
subject.Unsubscribe(observer1);
subject.Subscribe(new Observar("Observer 3"));
subject.Data++;
Console.ReadLine();
}
static void Main(string[] args)
{
Subject subject = new Subject();
// Observer1 takes a subscription to the store
Observer observer1 = new Observer("Observer 1");
subject.Subscribe(observer1);
// Observer2 also subscribes to the store
subject.Subscribe(new Observer("Observer 2"));
subject.Inventory++;
// Observer1 unsubscribes and Observer3 subscribes to notifications.
subject.Unsubscribe(observer1);
subject.Subscribe(new Observer("Observer 3"));
subject.Inventory++;
Console.ReadLine();
}
static async Task Main(string[] args)
{
IObserver consoleObserver = new ConsoleObserver();
IObserver fileObserver = new FileObserver();
Subject subject = new Subject();
subject.Subscribe(consoleObserver);
subject.Subscribe(fileObserver);
await subject.DoImportantWorkAsync();
subject.Unsubscribe(fileObserver);
await subject.DoImportantWorkAsync();
}
static void Main(string[] args)
{
var subject = new Subject();
var observerA = new ConcreteObserverA();
var observerB = new ConcreteObserverB();
subject.SomeBusinessLogic();
subject.Subscribe(observerA);
subject.Subscribe(observerB);
subject.SomeBusinessLogic();
subject.SomeBusinessLogic();
subject.Unsubscribe(observerB);
subject.SomeBusinessLogic();
}