Пример #1
0
        static void Main(string[] args)
        {
            // The client code.
            var subject   = new Subject();
            var observerA = new ConcreteObserverA();

            subject.Attach(observerA);

            var observerB = new ConcreteObserverB();

            subject.Attach(observerB);

            subject.SomeBusinessLogic();
            subject.SomeBusinessLogic();

            subject.Detach(observerB);

            subject.SomeBusinessLogic();
        }
Пример #2
0
        static void Main(string[] args)
        {
            //Observer Pattern
            //https://refactoring.guru/design-patterns/observer/csharp/example
            var subject   = new Subject();
            var observerA = new ConcreteObserverA();

            subject.Attach(observerA);

            var observerB = new ConcreteObserverB();

            subject.Attach(observerB);
            subject.SomeBusinessLogic();
            subject.SomeBusinessLogic();
            subject.Detach(observerB);
            subject.SomeBusinessLogic();

            Console.ReadLine();
        }