protected override void OnNavigatedTo(NavigationEventArgs args)
{
// Navigating from MainPage
if (this.NavigationContext.QueryString.ContainsKey("ComposerInfoIndex"))
{
composerInfoIndex = Int32.Parse(this.NavigationContext.QueryString["ComposerInfoIndex"]);
albumInfoIndex = Int32.Parse(this.NavigationContext.QueryString["AlbumInfoIndex"]);
}
// Reactivating from tombstoning
else if (PhoneApplicationService.Current.State.ContainsKey("ComposerInfoIndex"))
{
composerInfoIndex = (int)PhoneApplicationService.Current.State["ComposerInfoIndex"];
albumInfoIndex = (int)PhoneApplicationService.Current.State["AlbumInfoIndex"];
}
ComposerInfo composerInfo = MusicPresenter.Current.Composers[composerInfoIndex];
AlbumInfo albumInfo = composerInfo.Albums[albumInfoIndex];
// Set page title and DataContext
PageTitle.Text = composerInfo.Composer;
this.DataContext = albumInfo;
// Get the media state when it changes and also right now
MediaPlayer.MediaStateChanged += OnMediaPlayerMediaStateChanged;
OnMediaPlayerMediaStateChanged(null, EventArgs.Empty);
base.OnNavigatedTo(args);
}
void OnListBoxSelectionChanged(object sender, SelectionChangedEventArgs args)
{
ComposerInfo composerInfo = pivot.SelectedItem as ComposerInfo;
int composerInfoIndex = MusicPresenter.Current.Composers.IndexOf(composerInfo);
AlbumInfo albumInfo = (sender as ListBox).SelectedItem as AlbumInfo;
int albumInfoIndex = composerInfo.Albums.IndexOf(albumInfo);
// Construct URI with two indices and navigate
string destinationUri =
String.Format("/AlbumPage.xaml?ComposerInfoIndex={0}&AlbumInfoIndex={1}",
composerInfoIndex, albumInfoIndex);
this.NavigationService.Navigate(new Uri(destinationUri, UriKind.Relative));
}