C# (CSharp) CheckedSongsの例

コード例 #1

 private void CheckBox_Unchecked(object sender, RoutedEventArgs e)
 {
     if (sender is FrameworkElement elem && elem.DataContext is SongDto song)
     {
         CheckedSongs.Remove(song);
     }
 }

コード例 #2

 private void CheckBox_Checked(object sender, RoutedEventArgs e)
 {
     if (sender is FrameworkElement elem &&
         elem.DataContext is SongDto song &&
         !CheckedSongs.Contains(song))
     {
         CheckedSongs.Add(song);
     }
 }