播放系统声音：

string soundPath = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Windows) + Path.DirectorySeparatorChar + "Media" + Path.DirectorySeparatorChar + "Alarm01.wav";if (System.IO.File.Exists(soundPath)){    AlertPlayer.SoundLocation = soundPath;    AlertPlayer.Load();    AlertPlayer.PlayLooping();}