private void ShowLibraryList(object sender, RoutedEventArgs e) { List.Items.Clear(); DetailListing.Items.Clear(); MenuShowLibraryList.IsChecked = true; MenuShowPlaylists.IsChecked = false; foreach (string root in _libraryManager.GetAllRoots()) { List.Items.Add(root); } foreach (Song song in _libraryManager.GetSongManager().GetAllSongs()) { DetailListing.Items.Add(song); } }