c# - 使用 Aforge.NET 和 Windows 窗体时的线程安全

Question

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Answer 1

我怀疑您的 GUI 订阅了 ImageUpdated 事件。将您的 RgbStream 方法更改为以下内容:

private RgbStream(VideoCaptureDevice video)
{
    videoSource = video;
    currentImage = null;
    updaterLock = new object();

    if (videoSource == null)
        return;

    //Start the sensor and wait for it to be ready
    videoSource.Start();
    while (!videoSource.IsRunning) { }

    //Event for when a frame from the video is ready
    videoSource.NewFrame += (s, e) =>
    {
        if (System.Threading.Monitor.TryEnter(updaterLock, 20))
        {
            Bitmap old = currentImage;

            currentImage = (Bitmap)e.Frame.Clone();
            currentImage.RotateFlip(RotateFlipType.RotateNoneFlipY);

            if (currentImage != null)
            {
                if (ImageUpdated != null)
                {
                    SynchronizationContext context = SynchronizationContext.Current ?? new SynchronizationContext();
                    context.Send(s =>
                    {
                        ImageUpdated(this, EventArgs.Empty);

                    }, null);
                }

                if (old != null)
                {
                    old.Dispose();
                    old = null;
                }
            }
            else
                currentImage = old;

            System.Threading.Monitor.Exit(updaterLock);
        }
    };
}