ProximityDevice.FromId(String) Method

Reference

Definition

Namespace:: Windows.Networking.Proximity

Important

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Edit

Creates an instance of a ProximityDevice class and activates the specified proximity device interface.

public:
 static ProximityDevice ^ FromId(Platform::String ^ deviceId);

 static ProximityDevice FromId(winrt::hstring const& deviceId);

public static ProximityDevice FromId(string deviceId);

function fromId(deviceId)

Public Shared Function FromId (deviceId As String) As ProximityDevice

Parameters

deviceId: String
Platform::String

winrt::hstring

The DeviceInformation Id of a proximity device.

Returns

ProximityDevice

A new ProximityDevice that uses the specified proximity device interface. Throws a System.IO.FileNotFoundException exception if the specified proximity device interface isunavailable.

Windows requirements

App capabilities

ID_CAP_PROXIMITY [Windows Phone] proximity ID_CAP_PROXIMITY [Windows Phone]

Examples

Windows.Networking.Proximity.ProximityDevice proximityDevice;

private async void InitializeProximity()
{
    string selectorString = Windows.Networking.Proximity.ProximityDevice.GetDeviceSelector();

    var deviceInfoCollection =
        await Windows.Devices.Enumeration.DeviceInformation.FindAllAsync(selectorString, null);

        if (deviceInfoCollection.Count == 0)
        {
            StatusTextBlock.Text = "No proximity devices found.";
        } 
        else 
        {
            StatusTextBlock.Text = "Proximity Device id = " + deviceInfoCollection[0].Id;
            proximityDevice =
                Windows.Networking.Proximity.ProximityDevice.FromId(deviceInfoCollection[0].Id);
        }
}

Private proximityDevice As Windows.Networking.Proximity.ProximityDevice

Private Async Sub InitializeProximity()
    Dim selectorString = Windows.Networking.Proximity.ProximityDevice.GetDeviceSelector()

    Dim deviceInfoCollection =
        Await Windows.Devices.Enumeration.DeviceInformation.FindAllAsync(selectorString, {"{FB3842CD-9E2A-4F83-8FCC-4B0761139AE9} 2"})

    If deviceInfoCollection.Count = 0 Then
        StatusTextBlock.Text = "No proximity devices found."
    Else
        StatusTextBlock.Text = "Proximity Device id = " & deviceInfoCollection(0).Id
        proximityDevice =
            Windows.Networking.Proximity.ProximityDevice.FromId(deviceInfoCollection(0).Id)
    End If
End Sub

Remarks

You can enumerate proximity devices by passing the class selection string returned by the GetDeviceSelector method to the FindAllAsync or CreateWatcher method. You can then use the resulting DeviceInformation Id value(s) to create an instance of a ProximityDevice using the FromId method.

Applies to