public RemovedEventDispatcher(Collection <V> collection, EventQueue dispatcher, RemovedEventHandler handler)
{
this.Collection = collection;
this.Handler = dispatcher != null
? delegate(Collection <V> .RemovedEventArgs args) { dispatcher.Post(delegate() { handler(args); }); }
: handler;
this.Collection.Removed += this.Handler;
}
public void Dispose()
{
RemovedEventHandler handler = Interlocked.Exchange(ref this.Handler, null);
this.Collection.Removed -= handler;
}
public IDisposable Listen(EventQueue dispatcher, RemovedEventHandler handler)
{
// The RemovedEventDispatcher constructor adds an event handler to the Removed event.
return(new RemovedEventDispatcher(this, dispatcher, handler));
}
