public IAsyncResult BeginPoll(string device, string operation, AsyncCallback callback, object state)
{
var pollCompletionSource = new PollCompletionSource(device, operation, callback, state);
NotificationListener.Create().Register(device, operation, pollCompletionSource);
return(pollCompletionSource.Task);
}
public void UnregisterAll()
{
NotificationListener.Create().Dispose();
}
