Device​Departed​Event​Handler Device​Departed​Event​Handler Device​Departed​Event​Handler Device​Departed​Event​Handler Delegate

Definition

Namespace:
Windows.Networking.Proximity Windows.Networking.Proximity Windows.Networking.Proximity Windows.Networking.Proximity
Edit

Describes the method that handles the DeviceDeparted event.

public : delegate void DeviceDepartedEventHandler(ProximityDevice sender)public delegate void DeviceDepartedEventHandler(ProximityDevice sender)Public Delegate DeviceDepartedEventHandler(sender As ProximityDevice)// You can use this delegate in JavaScript.
Parameters
sender
ProximityDevice ProximityDevice ProximityDevice ProximityDevice

The proximity device that raised the DeviceDeparted event.

Attributes
ContractVersionAttribute GuidAttribute
Windows 10 requirements
Device family
Windows 10 (introduced v10.0.10240.0 - for Xbox, see UWP features that aren't yet supported on Xbox)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)
Capabilities
ID_CAP_PROXIMITY [Windows Phone] ID_CAP_PROXIMITY [Windows Phone] proximity

Examples

Windows.Networking.Proximity.ProximityDevice proximityDevice;

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

    if (proximityDevice != null) {
        proximityDevice.DeviceArrived += ProximityDeviceArrived;
        proximityDevice.DeviceDeparted += ProximityDeviceDeparted;

        WriteMessageText("Proximity device initialized.\n");
    }
    else
    {
        WriteMessageText("Failed to initialized proximity device.\n");
    }
}

private void ProximityDeviceArrived(Windows.Networking.Proximity.ProximityDevice device)
{
    WriteMessageText("Proximate device arrived. id = " + device.DeviceId + "\n");
}

private void ProximityDeviceDeparted(Windows.Networking.Proximity.ProximityDevice device)
{
    WriteMessageText("Proximate device departed. id = " + device.DeviceId + "\n");
}

// 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;

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

    if (proximityDevice) {
        proximityDevice.addEventListener("devicearrived", proximityDeviceArrived);
        proximityDevice.addEventListener("devicedeparted", proximityDeviceDeparted);

        id("messageDiv").innerHTML += "Proximity device initialized.<br />";
    }
    else {
        id("messageDiv").innerHTML += "Failed to initialized proximity device.<br />";
    }
}

function proximityDeviceArrived(device) {
    id("messageDiv").innerHTML += "Proximate device arrived. id = " + device.deviceId + "<br />";
}

function proximityDeviceDeparted(device) {
    id("messageDiv").innerHTML += "Proximate device departed. id = " + device.deviceId + "<br />";
}

Dim proximityDevice As Windows.Networking.Proximity.ProximityDevice

Private Sub InitializeProximityDevice()

    proximityDevice = Windows.Networking.Proximity.ProximityDevice.GetDefault()

    If proximityDevice IsNot Nothing Then
        AddHandler proximityDevice.DeviceArrived, AddressOf ProximityDeviceArrived
        AddHandler proximityDevice.DeviceDeparted, AddressOf ProximityDeviceDeparted

        WriteMessageText("Proximity device initialized." & vbTab)
    Else
        WriteMessageText("Failed to initialized proximity device." & vbTab)
    End If
End Sub

Private Sub ProximityDeviceArrived(device As Windows.Networking.Proximity.ProximityDevice)
    WriteMessageText("Proximate device arrived. id = " & device.DeviceId & vbTab)
End Sub

Private Sub ProximityDeviceDeparted(device As Windows.Networking.Proximity.ProximityDevice)
    WriteMessageText("Proximate device departed. id = " & device.DeviceId & vbTab)
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

See Also