MediaPlayer.SourceChanged Event


Occurs when the media source for the MediaPlayer changes.

// Register
event_token SourceChanged(TypedEventHandler<MediaPlayer, IInspectable const &> const& handler) const;

// Revoke with event_token
void SourceChanged(event_token const* cookie) const;

// Revoke with event_revoker
SourceChanged_revoker SourceChanged(auto_revoke_t, TypedEventHandler<MediaPlayer, IInspectable const &> const& handler) const;
public event TypedEventHandler<MediaPlayer,object> SourceChanged;
function onSourceChanged(eventArgs) { /* Your code */ }
mediaPlayer.addEventListener("sourcechanged", onSourceChanged);
mediaPlayer.removeEventListener("sourcechanged", onSourceChanged);
- or -
mediaPlayer.onsourcechanged = onSourceChanged;
Public Custom Event SourceChanged As TypedEventHandler(Of MediaPlayer, Object) 

Event Type


Windows 10 requirements

Device family
Windows 10 Anniversary Edition (introduced in 10.0.14393.0)
API contract
Windows.Foundation.UniversalApiContract (introduced in v3.0)


A typical use of this event is if you are implementing your own transport controls. You can respond to this event by checking to see whether the source is a MediaSource, MediaPlaybackItem, or MediaPlaybackList and then update your UI accordingly. For example, if the source is a MediaPlaybackItem, you could subscribe to the list of audio and caption tracks and update the list in your UI so that the user can select the active track.

Applies to