VintaSoft Imaging .NET SDK and Plug-ins Discussions

We have the vintasoft portion of our application working perfectly on desktop machines. The issue we are having is when the software is run on a citrix server, it sees the camera on the server, but it is unable to start the camera. Is there anything we have to do differently to start a camera on a citrix server than on a desktop. We do have a valid license for the server. at the top of the viewer it properly displays the name of the camera on the citrix server it just does not start the servers camera.

when i click the start button i get the following exception. I should add the code works on a standalone machine. the only problem is when it is run on a citrix server. I can see the name of the camera above the viewer control so it seems to be able to detect the camera. And Yes we are checking for the appropriate licenses in our code.

cannot start camera or fetch image
System.ArgumentException: Value does not fall within the specified range.

here is the code where the problem is

        private void SlaveWebcamViewer_Click(object sender, EventArgs e)     // this is the code attached to the start button
        {
            WebcamViewer viewer = (WebcamViewer)sender;
            if (viewer.CaptureDevice != null)
            {
                MasterWebcamViewer.CaptureDevice = viewer.CaptureDevice;
                try
                {
                    MasterWebcamViewer.Start();              //this is the line prodcuing the exception
                }
                catch (Exception ex)
                {
                    ShowErrorMessage(ex);
                }
            }
        }

Here is my constructor to initialize the viewer.

        public WebcamViewerForm()
        {
            InitializeComponent();
            _slaveViewers = new WebcamViewer[]
            {
                ImageViewer1,
                ImageViewer2

            };
            _viewers = new WebcamViewer[]
            {
                MasterWebcamViewer,
                ImageViewer1,
                ImageViewer2

            };

            MasterWebcamViewer.CaptureTimeout = 5; // ms
            MasterWebcamViewer.SizeMode = ImageSizeMode.BestFit;
            foreach (WebcamViewer viewer in _slaveViewers)
            {
                viewer.SizeMode = ImageSizeMode.BestFit;
                viewer.CaptureTimeout = 1000/25; // ms
            }

           

            _captureDevicesMonitor = new ImageCaptureDevicesMonitor();
            _captureDevicesMonitor.Timeout = 500;
            _captureDevicesMonitor.CaptureDevicesChanged += new EventHandler<ImageCaptureDevicesChangedEventArgs>(CaptureDevicesMonitor_CaptureDevicesChanged);
            _captureDevicesMonitor.Start();

        }

     private void WebcamViewerForm_Shown(object sender, EventArgs e)
        {
            ReadOnlyCollection<ImageCaptureDevice> devices = ImageCaptureDeviceConfiguration.GetCaptureDevices();
            int viewerIndex = 0;
            foreach (ImageCaptureDevice device in devices)
            {
                switch (viewerIndex)
                {
                    case 0:

                        MasterWebcamViewer.CaptureDevice = device;
                        _slaveViewers[0].CaptureDevice = device;
                        break;

                    case 1:
 
                        _slaveViewers[1].CaptureDevice = device;
                        break;

                }
                viewerIndex++;

            }
            if (MasterWebcamViewer.CaptureDevice != null)
            {
                Camera1Name.Text = MasterWebcamViewer.CaptureDevice.FriendlyName;
            }
            else
            {
                Camera1Name.Text = "No Camera Found";
            }

            if (_slaveViewers[1].CaptureDevice != null)
            {
                Camera2Name.Text = _slaveViewers[1].CaptureDevice.FriendlyName;
            }
            else
            {
                Camera2Name.Text = "No Camera Found";
            }
            
            StartAll();
        }

The form is similar to your one example. there are two slave viewers at the top of the form and a master viewer in the bottom half.

Cannot start camera or fetch image
System.ArgumentException: Value does not fall within the expected range.
at System.Runtime.InteropServices.Marshall.ThrowExceptionForHRInteral(Int32 errorCode, intPtr errorinfo)
at System.Runtime.InteropServices.Marshall.ThrowExceptionForHR(Int32 errorCode)
at 5.t.I()
at 5.t.Start()
at Vintasoft.Imaging.Media.ImageCaptureDevice.1(ImageCaptureSource)
at Vintasoft.Imaging.Media.ImageCaptureSource.Start()
at UnionAdministrator.Helpers.WebcamViewer.Start()