PlayToConnectionStateChangedEventArgs Class

Definition

Namespace:

Windows.Media.PlayTo

Provides information about the StateChanged event.

public ref class PlayToConnectionStateChangedEventArgs sealed

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.Deprecated("PlayToConnectionStateChangedEventArgs may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, "Windows.Foundation.UniversalApiContract")]
class PlayToConnectionStateChangedEventArgs final

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.Deprecated("PlayToConnectionStateChangedEventArgs may be altered or unavailable for releases after Windows 10.", Windows.Foundation.Metadata.DeprecationType.Deprecate, 65536, "Windows.Foundation.UniversalApiContract")]
public sealed class PlayToConnectionStateChangedEventArgs

Public NotInheritable Class PlayToConnectionStateChangedEventArgs

Inheritance

Object Platform::Object IInspectable PlayToConnectionStateChangedEventArgs

Attributes

ContractVersionAttribute DeprecatedAttribute MarshalingBehaviorAttribute ThreadingAttribute

Windows requirements

Device family	Windows 10 (introduced in 10.0.10240.0)
API contract	Windows.Foundation.UniversalApiContract (introduced in v1.0)

Examples

 private Windows.Media.PlayTo.PlayToManager ptm = 
         Windows.Media.PlayTo.PlayToManager.GetForCurrentView();

 protected override void OnNavigatedTo(NavigationEventArgs e)
 {
     ptm.SourceRequested += sourceRequestHandlerWithEvents;
     ptm.SourceSelected += sourceSelectedHandler;
 }

 private void sourceRequestHandlerWithEvents(
 Windows.Media.PlayTo.PlayToManager sender,
 Windows.Media.PlayTo.PlayToSourceRequestedEventArgs e)
 {
     try
     {
         var controller = mediaElement.PlayToSource;

         controller.Connection.Error += playToConnectionError;
         controller.Connection.StateChanged += playToConnectionStageChanged;
         controller.Connection.Transferred += playToConnectionTransferred;

         e.SourceRequest.SetSource(controller);
     }
     catch (Exception ex)
     {
         messageBlock.Text += "Exception encountered: " + ex.Message + "\n";
     }
 }

 // Called when the user selects a Play To device to stream to.

 private void sourceSelectedHandler(
     Windows.Media.PlayTo.PlayToManager sender,
     Windows.Media.PlayTo.PlayToSourceSelectedEventArgs e)
 {
     if (mediaElement.Name == "iplayer") {
         if (!e.SupportsImage) {
             messageBlock.Text += e.FriendlyName + " does not support streaming images. " +
                                  "Please select a different device.";
             return;
         }
     }

     if (mediaElement.Name == "vplayer") {
         if (!e.SupportsVideo) {
             messageBlock.Text += e.FriendlyName + " does not support streaming video. " +
                                  "Please select a different device.";
             return;
         }
     }

     if (mediaElement.Name == "aplayer") {
         if (!e.SupportsAudio) {
             messageBlock.Text += e.FriendlyName + " does not support streaming audio. " +
                                  "Please select a different device.";
             return;
         }
     }

     Windows.Storage.Streams.IRandomAccessStream iconStream = e.Icon;
     Windows.UI.Xaml.Media.Imaging.BitmapImage iconBitmap = 
             new Windows.UI.Xaml.Media.Imaging.BitmapImage();
     iconBitmap.SetSource(iconStream);
     playToDeviceIconImage.Source = iconBitmap;

     playToDeviceFriendlyNameBlock.Text = e.FriendlyName;
 }

 private void playToConnectionError(
     Windows.Media.PlayTo.PlayToConnection connection,
     Windows.Media.PlayTo.PlayToConnectionErrorEventArgs e)
 {
     if (e.Code == Windows.Media.PlayTo.PlayToConnectionError.DeviceError ||
         e.Code == Windows.Media.PlayTo.PlayToConnectionError.DeviceNotResponding) 
     {
         messageBlock.Text += "Error occurred. Disconnecting.\n";
     }

     messageBlock.Text += "Error: Message = " + e.Message.ToString() + "\n";
 }

private void playToConnectionStageChanged(
    Windows.Media.PlayTo.PlayToConnection connection, 
    Windows.Media.PlayTo.PlayToConnectionStateChangedEventArgs e) 
 {
     messageBlock.Text += "StateChanged: PreviousState = " + e.PreviousState.ToString() + "\n";
     messageBlock.Text += "StateChanged: CurrentState = " + e.CurrentState.ToString() + "\n";
 }

private void playToConnectionTransferred(
    Windows.Media.PlayTo.PlayToConnection connection, 
    Windows.Media.PlayTo.PlayToConnectionTransferredEventArgs e)
 {
     messageBlock.Text += "Transferred: PreviousSource = " + e.PreviousSource.ToString() + "\n";
     messageBlock.Text += "Transferred: CurrentSource = " + e.CurrentSource.ToString() + "\n";
 }

Private ptm As Windows.Media.PlayTo.PlayToManager =
        Windows.Media.PlayTo.PlayToManager.GetForCurrentView()

Protected Overrides Sub OnNavigatedTo(e As Navigation.NavigationEventArgs)
    AddHandler ptm.SourceRequested, AddressOf sourceRequestHandlerWithEvents
    AddHandler ptm.SourceSelected, AddressOf sourceSelectedHandler
End Sub

Private Sub sourceRequestHandlerWithEvents(
    sender As Windows.Media.PlayTo.PlayToManager,
    e As Windows.Media.PlayTo.PlayToSourceRequestedEventArgs)

    Try
        Dim controller = mediaElement.PlayToSource

        AddHandler controller.Connection.Error, AddressOf playToConnectionError
        AddHandler controller.Connection.StateChanged, AddressOf playToConnectionStageChanged
        AddHandler controller.Connection.Transferred, AddressOf playToConnectionTransferred

        e.SourceRequest.SetSource(controller)
    Catch ex As Exception
        messageBlock.Text &= "Exception encountered: " & ex.Message & vbCrLf
    End Try
End Sub

' Called when the user selects a Play To device to stream to.

Private Sub sourceSelectedHandler(
    sender As Windows.Media.PlayTo.PlayToManager,
    e As Windows.Media.PlayTo.PlayToSourceSelectedEventArgs)

    If mediaElement.Name = "iplayer" Then
        If Not e.SupportsImage Then
            messageBlock.Text &= e.FriendlyName & " does not support streaming images. " &
                                 "Please select a different device."
            Return
        End If
    End If

    If mediaElement.Name = "vplayer" Then
        If Not e.SupportsVideo Then
            messageBlock.Text &= e.FriendlyName & " does not support streaming video. " &
                                 "Please select a different device."
            Return
        End If
    End If

    If mediaElement.Name = "aplayer" Then
        If Not e.SupportsAudio Then
            messageBlock.Text &= e.FriendlyName & " does not support streaming audio. " &
                                 "Please select a different device."
            Return
        End If
    End If

    Dim iconStream = e.Icon
    Dim iconBitmap = New Windows.UI.Xaml.Media.Imaging.BitmapImage()
    iconBitmap.SetSource(iconStream)
    playToDeviceIconImage.Source = iconBitmap

    playToDeviceFriendlyNameBlock.Text = e.FriendlyName
End Sub

Private Sub playToConnectionError(
    connection As Windows.Media.PlayTo.PlayToConnection,
    e As Windows.Media.PlayTo.PlayToConnectionErrorEventArgs)

    If e.Code = Windows.Media.PlayTo.PlayToConnectionError.DeviceError OrElse
        e.Code = Windows.Media.PlayTo.PlayToConnectionError.DeviceNotResponding Then

        messageBlock.Text &= "Error occurred. Disconnecting." & vbCrLf
    End If

    messageBlock.Text &= "Error: Message = " & e.Message.ToString() & vbCrLf
End Sub

Private Sub playToConnectionStageChanged(
    connection As Windows.Media.PlayTo.PlayToConnection,
    e As Windows.Media.PlayTo.PlayToConnectionStateChangedEventArgs)

    messageBlock.Text &= "StateChanged: PreviousState = " & e.PreviousState.ToString() & vbCrLf
    messageBlock.Text &= "StateChanged: CurrentState = " & e.CurrentState.ToString() & vbCrLf
End Sub

Private Sub playToConnectionTransferred(
    connection As Windows.Media.PlayTo.PlayToConnection,
    e As Windows.Media.PlayTo.PlayToConnectionTransferredEventArgs)

    messageBlock.Text &= "Transferred: PreviousSource = " & e.PreviousSource.ToString() & vbCrLf
    messageBlock.Text &= "Transferred: CurrentSource = " & e.CurrentSource.ToString() & vbCrLf
End Sub

Remarks

For an example of how to use Play To in an application, see PlayReady DRM.

Properties

CurrentState	Gets the current state after the Play To connection state has changed.
PreviousState	Gets the previous state before the Play To connection state was changed.

See also

• Play To sample
• PlayToReceiver sample
• Media Server sample