音乐播放器

功能：
1.选择文件夹里的音乐文件
2.根据选中的索引切换播放
3.根据索引让音乐文件显示他被选中了
4个按钮一个listbox

結果展示：

用来存储音乐文件的全路径 局部变量拿不到

List<string> listSongs = new List<string>();

打开按钮是选择文件路径

private void button1_Click(object sender, EventArgs e){OpenFileDialog odf = new OpenFileDialog();odf.Title = "选择音乐文件夹";odf.InitialDirectory = @"C:\Users\H0772690\Music";odf.Multiselect = true;//多选odf.Filter = "音乐文件|*.wav|所有文件|*.*";odf.ShowDialog();//获得我们在文件夹中选择的所有文件的全路径string[] path = odf.FileNames;for (int i = 0; i < path.Length; i++){listBox1.Items.Add(path[i]);//将音乐文件的全路径存储到泛型集合中listSongs.Add(path[i]);}}

listbox

 /// <summary>/// 实现双击播放/// </summary>/// <param name="sender"></param>/// <param name="e"></param>SoundPlayer sp = new SoundPlayer();private void listBox1_DoubleClick(object sender, EventArgs e){sp.SoundLocation = listSongs[listBox1.SelectedIndex];sp.Play();}

关闭按钮

private void button4_Click(object sender, EventArgs e){this.Close();}

上一曲

private void button2_Click(object sender, EventArgs e){int index = listBox1.SelectedIndex;if (index == 0){index = listBox1.Items.Count;}index--;//将改变后的索引从新赋值给我选中项的索引listBox1.SelectedIndex = index;sp.SoundLocation = listSongs[index];sp.Play();}

下一曲

private void button3_Click(object sender, EventArgs e){int index = listBox1.SelectedIndex;index++;if (index == listBox1.Items.Count){index = 0;}//将改变后的索引从新赋值给我选中项的索引listBox1.SelectedIndex = index;sp.SoundLocation = listSongs[index];sp.Play();}