ProximityDevice.StopPublishingMessage(Int64) ProximityDevice.StopPublishingMessage(Int64) ProximityDevice.StopPublishingMessage(Int64) ProximityDevice.StopPublishingMessage(Int64) ProximityDevice.StopPublishingMessage(Int64) Method

Definition

Stops publishing a message.

public : void StopPublishingMessage(long messageId)
void StopPublishingMessage(long messageId) const;
public void StopPublishingMessage(Int64 messageId)
Public Sub StopPublishingMessage(messageId As Int64)
proximityDevice.stopPublishingMessage(messageId);

Parameters

messageId
Int64 Int64 Int64

The publication ID for the message.

Additional features and requirements

Capabilities
ID_CAP_PROXIMITY [Windows Phone] proximity ID_CAP_PROXIMITY [Windows Phone]

Examples

Windows.Networking.Proximity.ProximityDevice proximityDevice;
long publishedMessageId = -1;
long subscribedMessageId = -1;

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

    if (proximityDevice != null)
    {
        PublishMessageButton.Click += PublishMessage;
        SubscribeForMessageButton.Click += SubscribeForMessage;
        StopSubscribingForMessageButton.Click += StopSubscribingForMessage;
        StopPublishingMessageButton.Click += StopPublishingMessage;
    }
    else
    {
        WriteMessageText("Failed to initialized proximity device.
"); } } private void PublishMessage(object sender, RoutedEventArgs e) { // Stop publishing the current message. if (publishedMessageId != -1) { proximityDevice.StopPublishingMessage(publishedMessageId); } publishedMessageId = proximityDevice.PublishMessage("Windows.SampleMessage", MessageTextBlock.Text); } private void SubscribeForMessage(object sender, RoutedEventArgs e) { // Only subscribe for the message one time. if (subscribedMessageId == -1) { subscribedMessageId = proximityDevice.SubscribeForMessage("Windows.SampleMessage", messageReceived); } } private void messageReceived( Windows.Networking.Proximity.ProximityDevice device, Windows.Networking.Proximity.ProximityMessage message) { MessageBlock.Text += "Message received: " + message.DataAsString + "
"; } private void StopSubscribingForMessage(object sender, RoutedEventArgs e) { proximityDevice.StopSubscribingForMessage(subscribedMessageId); subscribedMessageId = -1; } private void StopPublishingMessage(object sender, RoutedEventArgs e) { proximityDevice.StopPublishingMessage(publishedMessageId); publishedMessageId = -1; } // 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; }); }
    function id(elementId) {
        return document.getElementById(elementId);
    }

    var proximityDevice;
    var publishedMessageId = -1;
    var subscribedMessageId = -1;

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

        if (proximityDevice) {
            id("publishMessageButton").addEventListener("click", publishMessage);
            id("subscribeForMessageButton").addEventListener("click", subscribeForMessage);
    id("stopSubscribingForMessageButton").addEventListener("click", 
        stopSubScribingForMessage);
    id("stopPublishingMessageButton").addEventListener("click", 
        stopPublishingMessage);
        }
        else {
            id("messageDiv").innerHTML += "Failed to initialized proximity device.<br />";
        }
    }

    function publishMessage() {
        // Stop publishing the current message.
        if (publishedMessageId != -1) {
            proximityDevice.stopPublishingMessage(publishedMessageId);
        }

        publishedMessageId = 
    proximityDevice.publishMessage("Windows.SampleMessage", id("messageText").value);
    }

    function subscribeForMessage() {
        // Only subscribe for the message one time.
        if (subscribedMessageId === -1) {
            subscribedMessageId = 
        proximityDevice.subscribeForMessage("Windows.SampleMessage", messageReceived);
        }
    }

    function messageReceived(device, message) {
        id("messageDiv").innerHTML += "Message received: " + message.dataAsString + "<br />";
    }

function stopSubscribingForMessage() {
    proximityDevice.stopSubscribingForMessage(subscribedMessageId);
        subscribedMessageId = -1;
}

function stopPublishingMessage() {
    proximityDevice.stopPublishingMessage(publishedMessageId);
        publishedMessageId = -1;
}
Private proximityDevice As Windows.Networking.Proximity.ProximityDevice
Private publishedMessageId As Long = -1
Private subscribedMessageId As Long = -1

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

    If proximityDevice IsNot Nothing Then
        AddHandler PublishMessageButton.Click, AddressOf PublishMessage
        AddHandler SubscribeForMessageButton.Click, AddressOf SubscribeForMessage
        AddHandler StopSubscribingForMessageButton.Click, AddressOf StopSubscribingForMessage
        AddHandler StopPublishingMessageButton.Click, AddressOf StopPublishingMessage
    Else
        WriteMessageText("Failed to initialized proximity device." & vbTab)
    End If
End Sub

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

    publishedMessageId =
        proximityDevice.PublishMessage("Windows.SampleMessage", MessageTextBlock.Text)
End Sub

Private Sub SubscribeForMessage(sender As Object, e As RoutedEventArgs)
    ' Only subscribe for the message one time.
    If subscribedMessageId = -1 Then
        subscribedMessageId =
        proximityDevice.SubscribeForMessage("Windows.SampleMessage", AddressOf messageReceived)
    End If
End Sub

Private Sub messageReceived(
    device As Windows.Networking.Proximity.ProximityDevice,
    message As Windows.Networking.Proximity.ProximityMessage)

    MessageBlock.Text &= "Message received: " & message.DataAsString & vbTab
End Sub

Private Sub StopSubscribingForMessage(sender As Object, e As RoutedEventArgs)
    proximityDevice.StopSubscribingForMessage(subscribedMessageId)
    subscribedMessageId = -1
End Sub

Private Sub StopPublishingMessage(sender As Object, e As RoutedEventArgs)
    proximityDevice.StopPublishingMessage(publishedMessageId)
    publishedMessageId = -1
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

Remarks

The publication ID for a message is returned from the PublishMessage, PublishBinaryMessage, and PublishUriMessage methods.

See also