//停止播放        public void stopFile()        {            axWindowsMediaPlayer1.Ctlcontrols.stop();        }        //暂停文件        public void pauseFile()        {              axWindowsMediaPlayer1.Ctlcontrols.pause();        }        //播放文件        public void starFile()        {            axWindowsMediaPlayer1.Ctlcontrols.play();        }        //列表清空        public void clearFile()        {            listBox1.Items.Clear();            axWindowsMediaPlayer1.Ctlcontrols.stop();        }        private void 全屏ToolStripMenuItem_Click(object sender, EventArgs e)        {            if (axWindowsMediaPlayer1.playState == WMPLib.WMPPlayState.wmppsPlaying)            {                axWindowsMediaPlayer1.fullScreen = !axWindowsMediaPlayer1.fullScreen;            }        }   private String file = "";        List<string> list = new List<string>();        //删除单个文件        public void delFile()        {            for (int i = 0; i < listBox1.Items.Count; i++)            {                if (listBox1.SelectedItems.Contains(listBox1.Items[i]))                {                    listBox1.Items.Remove(listBox1.Items[i]);                    axWindowsMediaPlayer1.Ctlcontrols.stop();                }            }        }   private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)        {                      DialogResult dr = openFileDialog1.ShowDialog();            openFileDialog1.Multiselect = true;            switch (dr)            {                 case DialogResult.OK:                    file = openFileDialog1.FileName;                    list.Add(file);                    axWindowsMediaPlayer1.URL = openFileDialog1.FileName;                    listBox1.Items.Add( openFileDialog1.FileName.Substring(file.LastIndexOf("\\")+1));                    break;                case DialogResult.No:                    break;            }        }  private void button5_Click(object sender, EventArgs e)        {            starFile();        }        private void button6_Click(object sender, EventArgs e)        {            pauseFile();        }        private void button7_Click(object sender, EventArgs e)        {            stopFile();        }        //上一曲        private void button3_Click(object sender, EventArgs e)        {            for (int i = 0; i < listBox1.Items.Count; i++)            {                if (listBox1.SelectedItems.Contains(listBox1.Items[i]))                {                    //如果是顶部                    if (listBox1.SelectedIndex == 0)                    {                        MessageBox.Show("已经达到顶部");                      }                    //否则就上一曲                    else                    {                        listBox1.SetSelected(listBox1.SelectedIndex - 1, true);                        axWindowsMediaPlayer1.URL = list[listBox1.SelectedIndex];                        return;                    }                                    }            }        }        //下一曲        private void button4_Click(object sender, EventArgs e)        {            for (int i = 0; i < listBox1.Items.Count; i++)            {                if (listBox1.SelectedItems.Contains(listBox1.Items[i]))                {                    //如果是顶部                    if (listBox1.SelectedIndex == listBox1.Items.Count - 1)                    {                        MessageBox.Show("已经达到尾部部");                        //MessageBox.Show(listBox1.Items.Count.ToString());                    }                    //否则就下一曲                    else                    {                        listBox1.SetSelected(listBox1.SelectedIndex+1, true);                        //让歌曲切换到下一曲                        axWindowsMediaPlayer1.URL = list[listBox1.SelectedIndex];                        return;                    }                }            }        }        private void 全选列表ToolStripMenuItem_Click(object sender, EventArgs e)        {                listBox1.MultiColumn = true;                   //listBox1.SetSelected(0, true);                //listBox1.SetSelected(1, true);                //listBox1.SetSelected(2, true);                        listBox1.Select();        }        private void 删除ToolStripMenuItem_Click(object sender, EventArgs e)        {            delFile();        }        private void 播放ToolStripMenuItem_Click(object sender, EventArgs e)        {            starFile();        }        private void 停止ToolStripMenuItem_Click(object sender, EventArgs e)        {            stopFile();        }        private void 暂停ToolStripMenuItem_Click(object sender, EventArgs e)        {            pauseFile();        }        private void 快退ToolStripMenuItem_Click(object sender, EventArgs e)        {            axWindowsMediaPlayer1.Ctlcontrols.fastReverse();        }        private void 快进ToolStripMenuItem_Click(object sender, EventArgs e)        {            axWindowsMediaPlayer1.Ctlcontrols.fastForward();        }        private void 清空ToolStripMenuItem_Click(object sender, EventArgs e)        {            delFile();        }