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步骤 7：向窗体中添加代码以播放声音

现在，您可以准备添加第二个 SoundPlayer，然后添加方法来调用每个 SoundPlayer。

播放声音

  1. 首先添加第二个 SoundPlayer 来播放 Windows Tada 声音。当玩家到达**“完成”**标签时，游戏将播放此声音。

    Public Class Form1

    ' This SoundPlayer plays a sound whenever the player hits a wall.
    Dim startSoundPlayer = New System.Media.SoundPlayer("C:\Windows\Media\chord.wav")

    ' This SoundPlayer plays a sound when the player finishes the game.
    Dim finishSoundPlayer = New System.Media.SoundPlayer("C:\Windows\Media\tada.wav")

    Public Sub New()
        ' This call is required by Windows Forms Designer.
        InitializeComponent()
        ' Add any initialization after the InitializeComponent() call.
        MoveToStart()
    End Sub

    public partial class Form1 : Form
{
    // This SoundPlayer plays a sound whenever the player hits a wall.
    System.Media.SoundPlayer startSoundPlayer = new System.Media.SoundPlayer(@"C:\Windows\Media\chord.wav");

    // This SoundPlayer plays a sound when the player finishes the game.
    System.Media.SoundPlayer finishSoundPlayer = new System.Media.SoundPlayer(@"C:\Windows\Media\tada.wav");

    public Form1()
    {
        InitializeComponent();
        MoveToStart();
    }

  2. 此时两个 SoundPlayer 都已添加到您的窗体中。添加 Play() 方法来调用 SoundPlayer，以便在适当的时候播放声音。希望在用户碰墙时播放一种声音。因此，请将语句 startSoundPlayer.Play(); 添加到 MoveToStart() 方法中。请记得更新注释。最终的方法将如下所示。

    ''' <summary>
''' Play a sound, then move the mouse pointer to a point 10 pixels down and to 
''' the right of the starting point in the upper-left corner of the maze.
''' </summary>
''' <remarks></remarks>
Private Sub MoveToStart()
    startSoundPlayer.Play()
    Dim startingPoint = Panel1.Location
    startingPoint.Offset(10, 10)
    Cursor.Position = PointToScreen(startingPoint)
End Sub

    /// <summary>
/// Play a sound, then move the mouse pointer to a point 10 pixels down and to 
/// the right of the starting point in the upper-left corner of the maze.
/// </summary>
private void MoveToStart()
{
    startSoundPlayer.Play();
    Point startingPoint = panel1.Location;
    startingPoint.Offset(10, 10);
    Cursor.Position = PointToScreen(startingPoint);
}

  3. 将语句 finishSoundPlayer.Play(); 添加到**“完成”**标签的 MouseEnter 事件处理程序。请记得更新注释，因为您已将代码更改为如下形式。

    Private Sub finishLabel_MouseEnter() Handles finishLabel.MouseEnter
    ' Play a sound, show a congratulatory MessageBox, then close the form.
    finishSoundPlayer.Play()
    MessageBox.Show("Congratulations!")
    Close()
End Sub

    private void finishLabel_MouseEnter(object sender, EventArgs e)
{
    // Play a sound, show a congratulatory MessageBox, then close the form.
    finishSoundPlayer.Play();
    MessageBox.Show("Congratulations!");
    Close();
}

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