"Play is not allowed when there is no source set " , OnNavigateTo , OnNavigatingFrom

Aug 17, 2012 at 5:46 AM
Edited Aug 17, 2012 at 5:48 AM

Hi , I am building a windows phone 7 app with live streaming .When i launch my app i am able to stream the video , but when i go back ( Hitting the back button ) and then come to the application i am not able to play the stream. The player throws the following exception

"Play is not allowed when there is no source set"

   protected override void OnNavigatedFrom(System.Windows.Navigation.NavigationEventArgs e)

    protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)

         PlaylistItem item = new PlaylistItem();

        //Define the media source : The URL from where the content will be streamed

                item.MediaSource = new Uri("http://playready.directtaps.net/smoothstreaming/SSWSS720H264/SuperSpeedway_720.ism/Manifest");
                // Delivery method : Adaptive Streaming
                item.DeliveryMethod = Microsoft.SilverlightMediaFramework.Plugins.Primitives.DeliveryMethods.AdaptiveStreaming;



Where am i going wrong ?