c# - 使用Windows Timer耗时事件的音频录制问题

Question

我正在按时间间隔从Windows应用程序录制语音。我创建了一个类来启动和停止语音记录并在我的表单上调用其功能。

该类如下

class VoiceRecording {
    [DllImport("winmm.dll", EntryPoint = "mciSendStringA", CharSet = CharSet.Ansi, SetLastError = true, ExactSpelling = true)]
    private static extern int mciSendString(string lpstrCommand, string lpstrReturnString, int uReturnLength, int hwndCallback);
    public VoiceRecording() {

    }

    public void StartRecording() {
        mciSendString("open new Type waveaudio Alias recsound", "", 0, 0);
        mciSendString("record recsound", "", 0, 0);
    }

    public void StopRecording(int FileNameCounter) {
        mciSendString(String.Format("save recsound {0}", @"E:\WAVFiles\" + FileNameCounter + ".wav"), "", 0, 0);
        mciSendString("close recsound ", "", 0, 0);
        Computer c = new Computer();
        c.Audio.Stop();
    }
}

现在，当我在按钮单击事件上调用这些函数时，例如

    int FileNameCounter = 1;
    private void btnStart_Click(object sender, EventArgs e) {
        VR = new VoiceRecording();
        VR.StartRecording();
    }

    private void btnStop_Click(object sender, EventArgs e) {
        VR.StopRecording(FileNameCounter++);
        VR = null;
    }

一切顺利，无论我单击按钮的速度有多慢，该代码始终会创建编号文件。

我也将代码放入循环

for (int i = 0; i < 10; i++) {
   VR = new VoiceRecording();
   VR.StartRecording();
   VR.StopRecording(FileNameCounter++);
   VR = null;
}

它还运行良好，并创建10个编号文件。

到现在一切都很好，这里我介绍了Timer

System.Timers.Timer t = new System.Timers.Timer();
t.Elapsed += new ElapsedEventHandler(TimerEvent);
t.Interval = 10000;
t.Start();

private bool RecordingStarted = false;
private void TimerEvent(object sender, ElapsedEventArgs e) {
    if (RecordingStarted) {
        VR.StopRecording(FileNameCounter++);
        VR = null;
        RecordingStarted = false;
    } else {
        VR = new VoiceRecording();
        VR.StartRecording();
        RecordingStarted = true;
    }
}

现在的问题是，当代码在TimerEvent中执行时，它正在创建文件，但同时也缺少一些文件。
例如
循环创建:1.wav，2.wav，3.wav，4.wav，5.wav，6.wav
计时器创建:1.wav，2.wav，4.wav，7.wav，8.wav，13.wav

我已经调试了代码，每条语句每次都在执行，但有时未创建文件。

任何帮助将不胜感激:)

Answer 1

正如汉斯·帕桑特(Hans Passant)所说

System.Timers.Timer is a difficult class, creating all kinds of opportunity for undiagnosable failure. Re-entrancy is always a risk, its habit of swallowing all exceptions is especially troublesome. Just don't use it, you don't need it. Use a regular Winforms timer instead.

使用Winforms计时器解决了该问题。现在，编号文件正在按我希望的方式创建。 :)

谢谢 Hans Passant