var number = proximityDevice.publishUriMessage(message, messageTransmittedHandler);

public long PublishUriMessage(
  Uri message, 
  MessageTransmittedHandler messageTransmittedHandler
)

Public Function PublishUriMessage(
  message As Uri,  
  messageTransmittedHandler As MessageTransmittedHandler 
) As Long

public:
long long PublishUriMessage(
  Uri^ message, 
  MessageTransmittedHandler^ messageTransmittedHandler
)

    private Windows.Networking.Proximity.ProximityDevice proximityDevice;
        
    public MainPage()
    {
        this.InitializeComponent();

        initializeProximitySample();
    }

    private void initializeProximitySample() 
    {
        proximityDevice = Windows.Networking.Proximity.ProximityDevice.GetDefault();

        if (proximityDevice == null)
            WriteMessageText("Failed to initialized proximity device.\n" +
                             "Your device may not have proximity hardware.");
    }

    // Write a message to MessageBlock on the UI thread.
    private Windows.UI.Core.CoreDispatcher messageDispatcher = Window.Current.CoreWindow.Dispatcher;

    async private void WriteMessageText(string message, bool overwrite = false)
    {
        await messageDispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal,
            () =>
            {
                if (overwrite)
                    MessageBlock.Text = message;
                else
                    MessageBlock.Text += message;
            });
    }

var proximityDevice;
 
app.onactivated = function (args) {
    if (args.detail.kind === activation.ActivationKind.launch) {
        initializeProximitySample();

        args.setPromise(WinJS.UI.processAll());
    }
};

function id(elementId) {
    return document.getElementById(elementId);
}

function initializeProximitySample() {
    proximityDevice = Windows.Networking.Proximity.ProximityDevice.getDefault();

    if (proximityDevice) {
        id("publishUriButton").addEventListener("click", publishUri);
        id("stopPublishingUriButton").addEventListener("click",
        stopPublishingUri);
    }
    else {
        id("messageDiv").innerHTML += "Failed to initialize proximity device." +
             "Your device may not have proximity hardware.<br />";
    }
}

Private proximityDevice As Windows.Networking.Proximity.ProximityDevice

Public Sub New()
    Me.InitializeComponent()

    initializeProximitySample()
End Sub

Private Sub initializeProximitySample()
    proximityDevice = Windows.Networking.Proximity.ProximityDevice.GetDefault()

    If proximityDevice Is Nothing Then
        WriteMessageText("Failed to initialized proximity device." & vbCrLf &
                         "Your device may not have proximity hardware.")
    End If
End Sub

' Write a message to MessageBlock on the UI thread.
Private Async Sub WriteMessageText(message As String, Optional overwrite As Boolean = False)
    Await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal,
            Sub()
                If overwrite Then
                    MessageBlock.Text = message
                Else
                    MessageBlock.Text &= message
                End If
            End Sub)
End Sub

long publishedUriId = -1;

private void PublishUriButton_Click(object sender, RoutedEventArgs e)
{
    // Stop publishing the current message.
    if (publishedUriId != -1)
        proximityDevice.StopPublishingMessage(publishedUriId);

    publishedUriId =
        proximityDevice.PublishUriMessage(new Uri("http://www.microsoft.com"),
                                          UriTransmitted);
}

    private void UriTransmitted(
Windows.Networking.Proximity.ProximityDevice sender,
    long messageId)
{
// The Uri has been successfully transmitted.
}

private void StopPublishingUriButton_Click(object sender, RoutedEventArgs e)
{
    proximityDevice.StopPublishingMessage(publishedUriId);
}

var publishedUriId = -1;
var subscribedUriId = -1;

function publishUri() {
    // Stop publishing the current Uri.
    if (publishedUriId != -1) {
        proximityDevice.stopPublishingUri(publishedUriId);
    }

    publishedUriId =
    proximityDevice.publishUri(new Windows.Foundation.Uri("http://www.microsoft.com"),
                                   uriTransmitted);
}

function uriTransmitted(sender, messageId) {
// The Uri has been successfully transmitted.
}

function stopPublishingUri() {
    proximityDevice.stopPublishingMessage(publishedUriId);
}

Private publishedUriId As Long = -1

Private Sub PublishUriButton_Click(sender As Object, e As RoutedEventArgs)
    ' Stop publishing the current message.
    If publishedUriId <> -1 Then
        proximityDevice.StopPublishingMessage(publishedUriId)
    End If

    publishedUriId =
        proximityDevice.PublishUriMessage(New Uri("http:'www.microsoft.com"),
                                          AddressOf UriTransmitted)
End Sub

Private Sub UriTransmitted(
sender As Windows.Networking.Proximity.ProximityDevice,
    messageId As Long)

' The Uri has been successfully transmitted
End Sub

Private Sub StopPublishingUriButton_Click()
    proximityDevice.StopPublishingMessage(publishedUriId)
End Sub