public void removeObserver(AthleteObserver observer)
{
if (ObserverList.Contains(observer))
{
ObserverList.Remove(observer);
}
}
public void registerObserver(AthleteObserver observer)
{
if (observer != null && !ObserverList.Contains(observer))
{
ObserverList.Add(observer);
observer.Notify(this);
}
}
