Error InvalidOperationException unhandled - help needed urgently

hi,

I have implemented the code for cameracapturedialog using WM 5.0 and VS 2005 and Windows 2000 professional OS .I m getting error using the ShowDialog() method of the CameraCaptureDialog.

Code is like this
CameraCaptureDialog cameraCapture = new CameraCaptureDialog();
cameraCapture.Owner = this;
cameraCapture.Mode = CameraCaptureMode.Still;
cameraCapture.StillQuality = CameraCaptureStillQuality.High;
cameraCapture.Resolution = new Size(175, 150);
cameraCapture.DefaultFileName = @"test.jpg";
cameraCapture.InitialDirectory = @"\My Documents";
cameraCapture.ShowDialog();

Stack Trace
==========================
System.InvalidOperationExceptoion: {"An unknown error occurred."}
InnerException: null
Message: "An unknown error occurred."
StackTrace: "at Microsoft.WindowsMobile.Forms.CameraCaptureDialog.LaunchCameraCaptureDialog()\r\nat Microsoft.WindowsMobile.Forms.CameraCaptureDialog.ShowDialog()\r\nat NCamera.Camera.startCamera()\r\nat NCap.Screen.Btn_TakePicture_Click()\r\nat System.Windows.Forms.MenuItem.OnClick()\r\nat System.Windows.Forms.Menu.ProcessMnuProc()\r\nat System.Windows.Forms.Form.WnProc()\r\nat System.Windows.Forms.Control._InternalWnProc()\r\nat Microsoft.AGL.Forms.EVL.EnterMainLoop()\r\nat System.Windows.Forms.Application.Run()\r\nat NCap.Program..ctor()\r\nat NCap.Program.Main()\r\n"

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Error InvalidOperationException unhandled - help needed urgently

robinjam
I have the same problem on my Qtek S200. It used to be fine until I installed a .net compact Service Pack. It seems ok once I remove the device from Active sync, and soft reset it, then it works intermittingly.

I pop the inmage into a sql compact database. Is there a resolution for this problem in the pipeline as my app is launching shortly.

Dave
SCRunner
The emulator does not emulate a camera. You need an actual device
connectionLink

hye_heena wrote:

How can i resolve this cant v have the emulators having the facility of camera by certain settings

No. You need an actual device with a camera
gleason78
Most Windows Mobile 5 devices I tried worked just fine. Among those Imate Jamin and JasJar, HP 6915
CiNN
thanx for help. But then how can i test the app i m supposed to make the appliction for capturing the picture the provide the facility of changing the file name. How can i resolve this cant v have the emulators having the facility of camera by certain settings
Virgoss
Hi Alex

I see that you say that you have tested on the HP6915. I am experiencing the same error on the hp6915 when trying to call the cameracapturedialog.showdialog() method .

what am I doing wrong

code that I am using below:

CameraCaptureDialog cameraCapture = new CameraCaptureDialog();

cameraCapture.Owner = null;

cameraCapture.InitialDirectory = @"\My Documents";

cameraCapture.DefaultFileName = @"test.jpg";

cameraCapture.Title = "Camera Demo";

cameraCapture.VideoTypes = CameraCaptureVideoTypes.Messaging;

cameraCapture.Resolution = new Size(176, 144);

cameraCapture.VideoTimeLimit = new TimeSpan(0, 0, 15); // Limited to 15 seconds of video.

cameraCapture.Mode = CameraCaptureMode.VideoWithAudio;

cameraCapture.ShowDialog();

if (DialogResult.OK == cameraCapture.ShowDialog())

{

Console.WriteLine("The picture or video has been successfully captured to:\n{0}", cameraCapture.FileName);

}

many thanks.
Damiaan
hi, i too have the same problem as alex with the hp hw6915. does anybody know a solution

thanx,

Klaus
webbsk
This would suggest that your device has some issues with the camera driver or else there is not enough memory available. What is the device
Areej
hi,
It got worked on o2 XDA 2. i want other devices on which it works. Coz i have to test app on various WM 5.0 enabled devices, help needed.
AbhijeetG
okay. Thanx again. Lets hope it gets done.
Wilk06
okay. thanx again. But i have came to know that CameraCaptureDialog is not working with many of the devices, can u suggest me which type of device needed, coz depending on this i can further proceed.

Thanx in advance.
Magdalena_Heidi
i am creating the appln for pocket pc emulator. Is it tht i have to run the app on device only cant i run it on emulator. for capturing the snap
Error InvalidOperationException unhandled - help needed urgently

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