RadBarcodeQR doesn't work in code-behind

2 posts, 0 answers
  1. Sergiy
    Sergiy avatar
    38 posts
    Member since:
    Jan 2012

    Posted 31 May 2013 Link to this post

    Hello, I am trying to get byte code of QR but I faced issue.
    It's standard sample from telerik

    var qRCode = new RadBarcodeQR();
    qRCode.ErrorCorrectionLevel = QRClassLibrary.Modes.ErrorCorrectionLevel.H;
    qRCode.Mode = QRClassLibrary.Modes.CodeMode.Byte;
    qRCode.Version = 2;
     
    qRCode.Text = "TestText";
     
    const string extension = "png";
    var dialog = new SaveFileDialog()
    {
        DefaultExt = extension,
        FileName = "QRBarCode",
        Filter = "Png (*.png)|*.png"
    };
     
    if (dialog.ShowDialog() == true)
    {
        using (var stream = dialog.OpenFile())
        {
            ExportExtensions.ExportToImage(qRCode, stream, new PngBitmapEncoder());
        }
    }

    But I have got the next Exception 

    The parameter value must be greater than zero.
    Parameter name: pixelWidth

       at System.Windows.Media.Imaging.RenderTargetBitmap..ctor(Int32 pixelWidth, Int32 pixelHeight, Double dpiX, Double dpiY, PixelFormat pixelFormat)
       at Telerik.Windows.Media.Imaging.ExportHelper.GetBitmapSource(FrameworkElement element, Double dpiX, Double dpiY) in c:\TB\221\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\ExportExtensions\ExportHelper.cs:line 97
       at Telerik.Windows.Media.Imaging.ExportHelper.GetElementImage(FrameworkElement element) in c:\TB\221\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\ExportExtensions\ExportHelper.cs:line 70
       at Telerik.Windows.Media.Imaging.ImageExporter.Export(FrameworkElement element, Stream stream, BitmapEncoder encoder) in c:\TB\221\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\ExportExtensions\ImageExporter.cs:line 12
       at Telerik.Windows.Media.Imaging.ExportExtensions.ExportToImage(FrameworkElement element, Stream stream, BitmapEncoder encoder) in c:\TB\221\WPF_Scrum\Release_WPF\Sources\Development\Core\Controls\ExportExtensions\ExportExtensions.cs:line 100
       at WpfApplication1.MainWindow.ButtonBase_OnClick(Object sender, RoutedEventArgs e) in c:\Users\smile\Documents\Visual Studio 2012\Projects\WpfApplication1\WpfApplication1\MainWindow.xaml.cs:line 352
       at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
       at System.Windows.Controls.Primitives.ButtonBase.OnClick()
       at System.Windows.Controls.Button.OnClick()
       at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
       at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
       at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
       at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
       at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
       at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
       at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
       at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
       at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
       at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
       at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
       at System.Windows.Input.InputManager.ProcessStagingArea()
       at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
       at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
       at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
       at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
       at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
       at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
       at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
       at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
       at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
       at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
       at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
       at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
       at System.Windows.Threading.Dispatcher.Run()
       at System.Windows.Application.RunDispatcher(Object ignore)
       at System.Windows.Application.RunInternal(Window window)
       at System.Windows.Application.Run(Window window)
       at System.Windows.Application.Run()
       at WpfApplication1.App.Main() in c:\Users\smile\Documents\Visual Studio 2012\Projects\WpfApplication1\WpfApplication1\obj\Debug\App.g.cs:line 0
       at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
       at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
       at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
       at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
       at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
       at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
       at System.Threading.ThreadHelper.ThreadStart()



    What am I doing wrong?
    I need to get the byte[] of image source (QR, BaCode and so on), could you give me sample of code what I need to do, please? (NOT LINK, I want to see a working example)
    Thank You
  2. Yavor
    Admin
    Yavor avatar
    11 posts

    Posted 04 Jun 2013 Link to this post

    Hello,

    I tested the code which you included, and it worked as expected.
    If the issue which you reported persists, please open a formal support ticket, and send us a small application, which replicates the issue. We will review it and get back to you with more information on the matter.

    Regards,
    Yavor
    Telerik

    Explore the entire Telerik portfolio by downloading Telerik DevCraft Ultimate.

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