static void Main(string[] args)
{
ObjectsHandler <User> usersHandler = new ObjectsHandler <User>();
UsersMonitor usersObserver = new UsersMonitor("Users observer");
UsersMonitor usersObserver2 = new UsersMonitor("Users observer2");
var user = new User(name: "John Smith", age: 35);
var user2 = new User(name: "Alex Davis", age: 41);
usersObserver.Subscribe(usersHandler);
usersHandler.AddObject(user);
usersObserver2.Subscribe(usersHandler);
usersHandler.AddObject(user2);
usersHandler.AddObject(user);
usersHandler.DeleteObject(user2);
usersHandler.DeleteObject(user2);
usersObserver.Unsubscribe();
usersHandler.AddObject(user2);
usersHandler.DeleteObject(user);
Console.ReadKey();
}
public virtual void Subscribe(ObjectsHandler <User> provider)
{
cancellation = provider.Subscribe(this);
}
