Silverlight:mediaelement State

You can detect state changes by using the currentStateChanged event by detecting the MediaElement state by using the CurrentState property. This overview includes the use of these APIs and provides information about transitions between different MediaElement states.

MediaElement

The current state of the MediaElement (buffering, Closed, Error, Opening, paused, Playing, or Stopped) affects users who use the media. For example, if a user is trying to view a large video, MediaElement may remain in the buffering state for a long time. In this case, you might want to provide a hint in the user interface (UI) that you can't play the media yet. When the buffer is complete, you may want to indicate that the media can now be played.

Using CurrentState and currentStateChanged

The following example shows a method to display the CurrentState of a MediaElement. It creates a MediaElement and several buttons to control media playback. To display the current state of the MediaElement, this example registers the currentStateChanged event and uses an event handler to update the TextBlock.

Xaml

<Grid>
<Grid.ColumnDefinitions>
<columndefinition width= "*"/>
<columndefinition width= "*"/>
<columndefinition width= "*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<rowdefinition height= "*"/>
<rowdefinition height= "Auto"/>
<rowdefinition height= "Auto"/>
</Grid.RowDefinitions>
<mediaelement currentstatechanged= "Media_state_changed"
X:name= "Media" source= "xbox.wmv" width= "300" height= "
grid.column= "0" grid.row= "0" grid.columnspan= "3"/>
<!--Stops Media playback.-->
<button click= "Stopmedia"
grid.column= "0" grid.row= "1" content= "Stop"/>
<!--pauses media playback. -->
<button click= "Pausemedia"
grid.column= "1" grid.row= "1" content= "Pause"/>
<!--begins media playback. -->
<button click= "PlayMedia"
Grid.column= "2" grid.row= "1" content= "Play"/>
<textblock
grid.column= "0" grid.row= "2" margin= "10"
Fontsize= ">CurrentState:</TextBlock>"
<textblock
X:name= "Mediastatetextblock"
grid.column= "1" grid.row= "2" margin= "0,10,0,0"
Fontsize= "></TextBlock>"
</Grid>

Vb

Private　Sub　StopMedia(ByVal　sender　As　Object,　ByVal　e　 As　RoutedEventArgs)
　　　　 media.Stop()
End　Sub
Private　Sub　PauseMedia(ByVal　sender　As　Object,　ByVal　e　As　 RoutedEventArgs)
　　　　 media.Pause()
End　Sub
Private　Sub　PlayMedia(ByVal　sender　As　Object,　ByVal　e　As　 RoutedEventArgs)
　　　　 media.Play()
End　Sub
Private　Sub　Media_State_Changed(ByVal　sender　As　Object,　ByVal　 e　As　EventArgs)
　　　　 mediaStateTextBlock.Text　=　media.CurrentState.ToString
End　Sub

C#

private void StopMedia(object sender, RoutedEventArgs e)
{
media.Stop();
}
private void PauseMedia(object sender, RoutedEventArgs e)
{
media.Pause();
}
private void PlayMedia(object sender, RoutedEventArgs e)
{
media.Play();
}
private void Media_State_Changed(object sender, EventArgs e)
{
mediaStateTextBlock.Text = media.CurrentState.ToString();
}