This is a migrated thread and some comments may be shown as answers.

PrintQueueException in RadDiagramPrintPreview

3 Answers 192 Views

Diagram

This is a migrated thread and some comments may be shown as answers.

Manuel asked on 27 Nov 2015, 02:57 PM

Our centralized logging system detected the following exception in one of our customers machines. It's not systematic or frequent: it just randomly happens on that machine:

System.Printing.PrintQueueException: PrintTicket provider failed to merge and validate PrintTicket. Win32 error: The data

is invalid.

at MS.Internal.Printing.Configuration.PTProvider.MergeAndValidatePrintTicket(MemoryStream basePrintTicket, MemoryStream deltaPrintTicket, PrintTicketScope scope, ConflictStatus& conflictStatus)

at System.Printing.PrintTicketManager.MergeAndValidatePrintTicket(PrintTicket basePrintTicket, PrintTicket deltaPrintTicket, PrintTicketScope scope)

at System.Printing.PrintQueue.MergeAndValidatePrintTicket(PrintTicket basePrintTicket, PrintTicket deltaPrintTicket)

at Telerik.Windows.Controls.Diagrams.Extensions.PrintSettingsViewModel.MergeAndValidatePrintTicket(PrintTicket originalTicket, PrintTicket modificationTicket)

at Telerik.Windows.Controls.Diagrams.Extensions.RadDiagramPrintPreview.DoPrint(String title)

at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)

at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)

at System.Windows.Controls.Primitives.ButtonBase.OnClick()

at System.Windows.Controls.Button.OnClick()

at Telerik.Windows.Controls.RadButton.OnClick()

at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)

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.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.Input.InputManager.ProcessStagingArea()

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 System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler).

And here is the code causing the issue:

var printPreviewWindow = new Telerik.Windows.Controls.RadWindow();

var printPreview = new RadDiagramPrintPreview { Diagram = selectedDiagram.diagram };

printPreviewWindow.Content = printPreview;

printPreviewWindow.ResizeMode = ResizeMode.NoResize;

printPreviewWindow.WindowStartupLocation = WindowStartupLocation.CenterOwner;

printPreviewWindow.Width = 800;

printPreviewWindow.Height = 600;

printPreviewWindow.Owner = _owner;

printPreviewWindow.ShowDialog();

They are on a quite old version of our product using Telerik 2014.3.1021.40 (.NET 4.0 and Microsoft Windows NT 6.2.9200.0 64 bit).

Our latest version includes Telerik 2015.3.930.40: as far as you guys know, the new version solves that issue?

Thank you,

Regards,

Manuel

3 Answers, 1 is accepted

answered on 03 Dec 2015, 04:39 PM

Hi Petar,

thank you for your response.

Looking at the official documentation, it seems that a PrintQueueException may be related to a configuration issue (o.s. side) or to insufficient privileges. So I agree: it's not something under your control.

However I think that the exception should be managed by the RadDiagramPrintPreview control (or one of its dependencies). The only viable alternative I have to prevent an unhandled exception to crash my application is to put the"printPreviewWindow.ShowDialog()" code into a try..catch: a terrible hack affecting both usability (the entire printPreviewWindow will be closed) and maintainability (what will happen if you decide to put the print call into a different thread? My solution will be no more effective --> regression).

Sounds reasonable?