学步园

方法一：

//先启动Timer

Timer timer1= new Timer();

timer1.Tick += new EventHandler(Timer_Tick);

timer1.Start（）；

timer1.Interval=10;

//触发事件

private void Timer_Tick(object sender, EventArgs e)
        {
           if ((int)MediaPlayer1.playState == 1)//表示状态为停止时
            {
                if (listBox1.SelectedIndex < listBox1.Items.Count - 1)
                    listBox1.SelectedIndex = (listBox1.SelectedIndex + 1);

                else
                    if (listBox1.Items.Count > 0)
                        listBox1.SelectedIndex = 0;

               //播放
                PlaySong(listBox1.SelectedIndex);
            }

//说明此种方法有效，但有一个bug，每次遇到mediaPlayer1.Ctcontrols.Stop()方法，自动播放下一首

方法二：这个方法比较好 自动顺序播放下一首

先设置：timer1.Interval=10; 时间间隔不宜太长

 private void MediaPlayer1_StatusChange(object sender, EventArgs e)
        {
            if (MediaPlayer1.playState == WMPLib.WMPPlayState.wmppsMediaEnded）
                timer1.Start();
        }

private void Timer_Tick(object sender, EventArgs e)
        {
            timer1.Stop();
                if (listBox1.SelectedIndex < listBox1.Items.Count - 1)
                    listBox1.SelectedIndex = (listBox1.SelectedIndex + 1);

                else
                    if (listBox1.Items.Count > 0)
                        listBox1.SelectedIndex = 0;
                PlaySong(listBox1.SelectedIndex + 1);
       }

方法三：采用线程