C# 调用摄像头拍照 video device was unplugged

Question

最近在使用摄像头的时候，提示了这个 video device was unplugged错误

winform的形式，用了控件VideoSourcePlayer，下面是我的方法

videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);

            if (videoDevices.Count != 0)
            {
                videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
                videoSource = new VideoCaptureDevice(videoDevices[0].MonikerString);//连接摄像头。
                selectedDeviceIndex = 0;
                videoSource.VideoResolution = videoSource.VideoCapabilities[selectedDeviceIndex];
                _vspTakePhoto.VideoSource = videoSource;
                // set NewFrame event handler
                _vspTakePhoto.Start();
            }
            else
            {
                throw new ApplicationException();
            }

但是我不断的刷新（写了方法不断地打开关闭摄像头），然后就可以。

所以述求是：

1.怎么循环获取到成功为止，而不是我手动刷新。

2.是代码问题还是硬件设备的问题呢？

Answer 1

while (true)
{

videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);

            if (videoDevices.Count != 0)
            {
                videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
                videoSource = new VideoCaptureDevice(videoDevices[0].MonikerString);//连接摄像头。
                selectedDeviceIndex = 0;
                videoSource.VideoResolution = videoSource.VideoCapabilities[selectedDeviceIndex];
                _vspTakePhoto.VideoSource = videoSource;
                // set NewFrame event handler
                _vspTakePhoto.Start();
                                break;
            }
            else
            {
                //throw new ApplicationException();
            }

}