AudioPlayerApp.AudioPlayer.Stop C# (CSharp) Method

        public void Stop()
        {
            if (State != AudioPlayerState.Stopped)
            {
                playPosition = TimeSpan.Zero;
                nextPlayPosition = TimeSpan.Zero;
                playPositionStart = TimeSpan.Zero;
                clock.Stop();
                playCounter++;
                State = AudioPlayerState.Stopped;
                playEvent.Reset();
            }
        }

 private void StopButton_Click(object sender, RoutedEventArgs e)
 {
     lock (lockAudio)
     {
         if (audioPlayer != null)
         {
             audioPlayer.Stop();
         }
     }
 }