private void detach_MusicGroup_Songs(MusicGroup_Song entity) { this.SendPropertyChanging(); entity.Song = null; }
partial void DeleteMusicGroup_Song(MusicGroup_Song instance);
partial void InsertMusicGroup_Song(MusicGroup_Song instance);
partial void UpdateMusicGroup_Song(MusicGroup_Song instance);
private void attach_MusicGroup_Songs(MusicGroup_Song entity) { this.SendPropertyChanging(); entity.MusicGroup = this; }