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();
}
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();
}