public Subscription(IObserver <SubscriptionType> observer, EventFlowSubject <SubscriptionType> parentSubject)
{
Debug.Assert(observer != null);
Debug.Assert(parentSubject != null);
this.parentSubject = parentSubject;
this.observer = observer;
}
public void Dispose()
{
var current = Interlocked.Exchange <IObserver <SubscriptionType> >(ref this.observer, null);
if (current != null)
{
this.parentSubject.Unsubscribe(current);
this.parentSubject = null;
}
}