axWindowsMediaPlayer1.settings.autoStart = true;      //設置自動播放axWindowsMediaPlayer1.settings.setMode("loop", true);   //設置循環播放

 List<string> fileList = new List<string>();       private void button1_Click(object sender, EventArgs e)    {      fileList.Add(@"E://QLDownload/nba//Action2.mp4");      fileList.Add(@"E://QLDownload/nba//Action3.mp4");      fileList.Add(@"E://QLDownload/nba//Action4.mp4");      fileList.Add(@"E://QLDownload/nba//Action5.mp4");      for (int i = 0; i < fileList .Count ; i++)      {        listBox1.Items.Add(fileList [i]);      }      //默認選擇第一項      this.listBox1.SelectedIndex = 0;      axWindowsMediaPlayer1 .URL = fileList [listBox1.SelectedIndex];      axWindowsMediaPlayer1 .Ctlcontrols.play();    } private void timer1_Tick(object sender, EventArgs e)    {      if (axWindowsMediaPlayer1 .playState == WMPLib.WMPPlayState.wmppsPlaying)      {        double d1 = Convert.ToDouble(axWindowsMediaPlayer1 .currentMedia.duration.ToString());        double d2 = Convert.ToDouble(axWindowsMediaPlayer1 .Ctlcontrols.currentPosition.ToString()) + 1;        if (d1 <= d2)        {          nextMusic(listBox1.SelectedIndex);        }      }     } private void Form1_Load(object sender, EventArgs e)    {      axWindowsMediaPlayer1 .settings.autoStart = false ;        }void nextMusic(int index)    {      //listBox1.SelectedIndices.Clear();      index++;      if (index == listBox1.Items.Count)      {        index = 0;      }      axWindowsMediaPlayer1 .URL = fileList [index];      listBox1.SelectedIndex = index;      axWindowsMediaPlayer1 .Ctlcontrols.play();    }