C# (CSharp) AddSongEvent示例

示例#1

        public void AddSong(Song newSong)
        {
            this.songsList.Add(newSong);

            AddSongEvent?.Invoke(newSong);
        }

示例#2

 public void AddSong(Song song)
 {
     songs.Add(song);
     AddSongEvent?.Invoke(song);
 }