AForge.Video.DirectShow.VideoCaptureDevice.Start C# (CSharp) Method

        public void Start( )
        {
            if ( !IsRunning )
            {
                // check source
                if ( string.IsNullOrEmpty( deviceMoniker ) )
                    throw new ArgumentException( "Video source is not specified." );

                framesReceived = 0;
                bytesReceived = 0;
                isCrossbarAvailable = null;
                needToSetVideoInput = true;

                // create events
                stopEvent = new ManualResetEvent( false );

                lock ( sync )
                {
                    // create and start new thread
                    thread = new Thread( new ThreadStart( WorkerThread ) );
                    thread.Name = deviceMoniker; // mainly for debugging
                    thread.Start( );
                }
            }
        }

        public bool Connect()
        {
            var videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);

            if (videoDevices.Count == 0)
            {
                return false;
            }
            // create video source
            currentDevice = new VideoCaptureDevice(videoDevices[0].MonikerString);
            videoSourcePlayer1.VideoSource = currentDevice;
            var videoCapabilities = currentDevice.VideoCapabilities;
            //foreach (var video in videoCapabilities)
            //{
            //    LogHelper.Info("预览分辨率->" + video.FrameSize.Width + "*" + video.FrameSize.Height);
            //}
            if (videoCapabilities.Count() > 0)
                currentDevice.VideoResolution = currentDevice.VideoCapabilities.Last();

            var snapVabalities = currentDevice.SnapshotCapabilities;
            //foreach (var snap in snapVabalities)
            //{
            //    LogHelper.Info("抓拍分辨率->" + snap.FrameSize.Width + "*" + snap.FrameSize.Height);
            //}
            if (snapVabalities.Count() > 0)
                currentDevice.SnapshotResolution = currentDevice.SnapshotCapabilities.Last();

            currentDevice.Start();

            return true;
        }