MediaStreamSourceSwitchStreamsRequestDeferral MediaStreamSourceSwitchStreamsRequestDeferral MediaStreamSourceSwitchStreamsRequestDeferral MediaStreamSourceSwitchStreamsRequestDeferral Class


Provides a way for the application to asynchronously report that it has completed the MediaStreamSource.SwitchStreamsRequested event.

public : sealed class MediaStreamSourceSwitchStreamsRequestDeferral : IMediaStreamSourceSwitchStreamsRequestDeferral
public sealed class MediaStreamSourceSwitchStreamsRequestDeferral : IMediaStreamSourceSwitchStreamsRequestDeferral
Public NotInheritable Class MediaStreamSourceSwitchStreamsRequestDeferral Implements IMediaStreamSourceSwitchStreamsRequestDeferral
// This class does not provide a public constructor.
Windows 10 requirements
Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)


You can use a deferral when you want to make an asynchronous call in response to the MediaStreamSource.SwitchStreamsRequested event. For example, if you need to establish a HTTP connection or open a file for reading. The MediaStreamSource will then wait for you to mark the deferral as complete before it begins raising the SampleRequested event.

To create a deferral, call the GetDeferral method on the MediaStreamSourceSwitchStreamsRequest object to instruct the MediaStreamSource to wait for your asynchronous call to complete. When you are ready to start receiving SampleRequested events, call the Complete method to end the deferral.

See the MediaStreamSource Sample for an example of using Media Stream Source in a UWP app.


Complete() Complete() Complete() Complete()

Reports that the application has completed processing the MediaStreamSource.SwitchStreamsRequested event.

public : void Complete()
public void Complete()
Public Function Complete() As void

See Also