void Detach(iObserver observer);
void Attach(iObserver observer);
//implement Detach Method - Detach from subject when no longer in use
public void Detach(iObserver observer)
{
list_observer.Remove(observer);
}
//implement Attach Method - attach to subject
public void Attach(iObserver observer)
{
list_observer.Add(observer);
}
// detach observer from the subject
public void Detach(iObserver observer)
{
observerList.Remove(observer);
}
// attach observer to the subject
public void Attach(iObserver observer)
{
observerList.Add(observer);
}