Listening for the MediaEnded event in another window

I am making a simple C # WPF video player.

I have 2 Windows: MainWindow (parent window) contains a MediaElement to display the video. PlaylistWindow (child window) is a window containing a ListBox that displays all .avi files in the appRoot path.

Currently, when I double click the ListBox item, it plays this video in the MainWindow. I would like to have an auto play feature, so the next item in the list is automatically played when the current video ends.

I would like the PlaylistWindow to listen for the MediaEnded event triggered by the MediaElement in the MainWindow, so I can do some things on the ListBox in the PlaylistWindow.

How can I subscribe to the MediaEnded event from PlaylistWindow?

Edit to add: I ended up using a different approach as shown below. I don't think this is the best way to do it, but it works for me.

public partial class MainWindow : Window
{
    PlaylistWindow PLWindow = new PlaylistWindow();

    public MainWindow()
    {
        InitializeComponent();
    }

    private void MainWindow_Loaded(object sender, RoutedEventArgs e)
    {
        PLWindow.Owner = this;
        PLWindow.Show();
    }

    private void videoWindow_Ended(object sender, EventArgs e)
    {
        PLWindow.playNext();
    }
}

public partial class PlaylistWindow : Window
{
    public void playNext()
    {
        if (playListBox.SelectedIndex < playListBox.Items.Count - 1)
        {
            playListBox.SelectedIndex = playListBox.SelectedIndex + 1;
        }
        else { playListBox.SelectedIndex = 0; }

        (Owner as MainWindow).playVideo(playListBox.SelectedValue.ToString());
    }
}

      

        
        
        
      

    

I'm still open to learning how to listen for the MediaEnded event on the PlaylistWindow, if the sample code can be posted.