Question

我在开始时将一个名为playercount的int设置为1并执行以下操作..

private void button2_Click(object sender, EventArgs e)
    {
        playercount++;
        WMPLib.WindowsMediaPlayer wplayer = new WMPLib.WindowsMediaPlayer();
        wplayer.URL = "Super Mario Bros.mp3";

        if (playercount % 2 == 0)
        {
            button2.Text = "Music Toggle: ON";
            wplayer.controls.play();
        }
        else
        {
            wplayer.controls.stop();
            button2.Text = "Music Toggle: OFF";
        }


    }

由于某些原因，音乐停止似乎不起作用。有什么东西我做错了吗？

Answer 1

每次单击按钮时，您都在创建WindowsMediaPlayer的新实例。这意味着您的stop()来电不会影响您在play()首次点击时创建的播放器。

您需要将播放器创建为类级变量并对其进行操作。

InvernoMuto指出，你playercount逻辑也有点可疑。简单bool还不够吗？

private bool musicPlaying = false;
private WMPLib.WindowsMediaPlayer wplayer = null;

private void button2_Click(object sender, EventArgs e)
{
    // create player only if necessary
    if(wplayer == null)
    {
        wplayer = new WMPLib.WindowsMediaPlayer();
        wplayer.URL = "Super Mario Bros.mp3";
    }

    // toggle musicPlaying
    musicPlaying = !musicPlaying;

    if (musicPlaying)
    {
        button2.Text = "Music Toggle: ON";
        wplayer.controls.play();
    }
    else
    {
        wplayer.controls.stop();
        button2.Text = "Music Toggle: OFF";
    }
}

player.controls.stop（）;不起作用

1 个答案: