PeerWatcher.Stopped Ereignis

Definition

Namespace:

Windows.Networking.Proximity

Tritt auf, wenn das PeerWatcher-Objekt beendet wurde.

// Register
event_token Stopped(TypedEventHandler<PeerWatcher, IInspectable const&> const& handler) const;

// Revoke with event_token
void Stopped(event_token const* cookie) const;

// Revoke with event_revoker
PeerWatcher::Stopped_revoker Stopped(auto_revoke_t, TypedEventHandler<PeerWatcher, IInspectable const&> const& handler) const;

public event TypedEventHandler<PeerWatcher,object> Stopped;

function onStopped(eventArgs) { /* Your code */ }
peerWatcher.addEventListener("stopped", onStopped);
peerWatcher.removeEventListener("stopped", onStopped);
- or -
peerWatcher.onstopped = onStopped;

Public Custom Event Stopped As TypedEventHandler(Of PeerWatcher, Object) 

Ereignistyp

TypedEventHandler<PeerWatcher,Object>

TypedEventHandler<PeerWatcher,IInspectable>

Windows-Anforderungen

App-Funktionen

proximity

Hinweise

Sie können die Stop-Methode aufrufen, um das PeerWatcher-Objekt zu beenden. Sie können sich für das Ereignis Stopped registrieren, um darüber informiert zu werden, wenn peerWatcher beendet wurde. Sie müssen auf das Ereignis Stopped warten, bevor Sie die Start-Methode aufrufen können, um peerWatcher neu zu starten.

private PeerWatcher _peerWatcher;
private bool _peerWatcherIsRunning = false;
private bool _peerFinderStarted = false;

// The list of peers discovered by the PeerWatcher.
ObservableCollection<PeerInformation> _discoveredPeers = new ObservableCollection<PeerInformation>();
void PeerFinder_StartPeerWatcher(object sender, RoutedEventArgs e)
{
    if (!_peerFinderStarted)
    {
        // PeerFinder must be started first.
        return;
    }

    if (_peerWatcherIsRunning)
    {
        // PeerWatcher is already running.
        return;
    }

    try
    {
        if (_peerWatcher == null)
        {
            _peerWatcher = PeerFinder.CreateWatcher();

            // Add PeerWatcher event handlers. Only add handlers once.
            _peerWatcher.Added += PeerWatcher_Added;
            _peerWatcher.Removed += PeerWatcher_Removed;
            _peerWatcher.Updated += PeerWatcher_Updated;
            _peerWatcher.EnumerationCompleted += PeerWatcher_EnumerationCompleted;
            _peerWatcher.Stopped += PeerWatcher_Stopped;
        }

        // Empty the list of discovered peers.
        _discoveredPeers.Clear();

        // Start the PeerWatcher.
        _peerWatcher.Start();

        _peerWatcherIsRunning = true;
    }
    catch (Exception ex)
    {
        // Exceptions can occur if PeerWatcher.Start is called multiple times or
        // PeerWatcher.Start is called the PeerWatcher is stopping.
    }
}

protected override void OnNavigatingFrom(NavigatingCancelEventArgs e)
{
    if (_peerWatcher != null)
    {
        // Remove event handlers.
        _peerWatcher.Added -= PeerWatcher_Added;
        _peerWatcher.Removed -= PeerWatcher_Removed;
        _peerWatcher.Updated -= PeerWatcher_Updated;
        _peerWatcher.EnumerationCompleted -= PeerWatcher_EnumerationCompleted;
        _peerWatcher.Stopped -= PeerWatcher_Stopped;

        _peerWatcher = null;
    }
}

private void PeerWatcher_Stopped(PeerWatcher sender, object o)
{
    _peerWatcherIsRunning = false;
    var result = Dispatcher.RunAsync(CoreDispatcherPriority.Low, () =>
    {
        // Update UI now that the PeerWatcher is stopped.
    });
}

Weitere Informationen

• Näherung und Tippen (C#/VB/C++)
• Näherungsbeispiel
• Näherungsbeispiel