Hey,

currently I'm trying to implement the RadExpressionEditor for creating custom Grid view groups. Everything is working fine besides the ExpressionChanged event of the RadExpressionEditor. The event is not called every time the expression changed. If I enter the following expression:

"Sample: " + GetFormattedField("1282", "N2")

Expression changed is called.

if I remove the last bracket ExpressionChanged gets fired and the expression is invalid (this behaviour is correct). If I add the bracket again, ExpressionChanged IS NOT fired. This behaviour occurse in different scenarios. This makes it difficult to trust the system, because we have a lot of invalid expressions, even a valid expression is entered.

Thank you!

As image attached ,when item is dragged for reorder,drag indicator is cover whole column(as red box shown) but not specific column and row(as green box shown).Is there are some workaround to fix that? 

PS: ItemHeight and ItemWidth of VirtualizingWrapPanel is set by C# code

Hi. Not sure if this is the place to ask this.

I have a WPF scheduler app built around this scheduleview.

If I want to migrate it to .net core (asp.net), is there a migration path? 

Are the features equivalent? How can I find out how difficult could this be?

Thanks in advance.

Hello all,

How can I replace contents using RadRichTextBox/RadDocumentEditor without moving the RadDocument.Selection to the range I want to change?

Moving and restoring the selection seems to work will scroll the document to the new selection position, which is undesired.

After going through similar posts, I found that I can insert content at an arbitrary location using the InsertFragment(DocumentFragment, DocumentPosition) method, but no way to replace a whole range (e.g. defined by two DocumentPosition instances) or even delete the contents of an such a range.

I am using the following AnnotationsProvider to generate annotations using data bindings:

<code>
<telerik:RadCartesianChart.AnnotationsProvider>

                                            <telerik:ChartAnnotationsProvider Source="{Binding LocationHistory}">
                                                <telerik:ChartAnnotationDescriptor>
                                                    <telerik:ChartAnnotationDescriptor.Style>
                                                        <Style TargetType="telerik:CartesianPlotBandAnnotation">
                                                            <Setter Property="Axis" Value="{Binding HorizontalAxis, RelativeSource={RelativeSource AncestorType=telerik:RadCartesianChart}}" />
                                                            <Setter Property="From" Value="{Binding Item2}" />
                                                            <Setter Property="To" Value="{Binding Item3}" />
                                                            <Setter Property="Fill" Value="{Binding Item1, Converter={StaticResource LocationToBrushConverter}}" />
                                                        </Style>
                                                    </telerik:ChartAnnotationDescriptor.Style>
                                                </telerik:ChartAnnotationDescriptor>
                                            </telerik:ChartAnnotationsProvider>
                                        </telerik:RadCartesianChart.AnnotationsProvider>
</code>

I have a bunch of LineSeries elements as well inside the RadCartesianChart element which is the parent of this AnnotationsProvider.

I am trying to get these annotations to render below all the LineSeries elements. But I am unable to set the ZIndex propery through ChartAnnotationDescriptor.Style. Could you please let me know if there is a workaround for this issue?

Hi, 

I would like to be able to begin typing the moment the MultiColumnComboBox has focus, which is not possible at the moment.  I need to click in the control or tap Tab a second time before I can begin typing.

Best Regards,
Hans

Hi Team,

We are facing the below exception when scheduling an appointment. we are using "2017.2.503.45" version of Telerik.Windows.Controls and VS 2017.

System.InvalidOperationException:

   at System.Windows.Data.CollectionView.DeferRefresh (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at Telerik.Windows.Controls.ScheduleView.ScheduleViewDataConnection.SetGroupingAndFiltering (Telerik.Windows.Controls.ScheduleView, Version=2017.2.503.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
   at Telerik.Windows.Controls.ScheduleViewBase.RegenerateGroupHeaders (Telerik.Windows.Controls.ScheduleView, Version=2017.2.503.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
   at Telerik.Windows.Controls.ScheduleViewBase.OnResourceTypesSourcePropertyChanged (Telerik.Windows.Controls.ScheduleView, Version=2017.2.503.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7)
   at System.Windows.DependencyObject.OnPropertyChanged (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.FrameworkElement.OnPropertyChanged (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.DependencyObject.NotifyPropertyChange (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.DependencyObject.UpdateEffectiveValue (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.DependencyObject.InvalidateProperty (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Data.BindingExpressionBase.Invalidate (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.Data.BindingExpression.TransferValue (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at MS.Internal.Data.ClrBindingWorker.OnSourcePropertyChanged (PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.WeakEventManager+ListenerList`1.DeliverEvent (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.Windows.WeakEventManager.DeliverEventToList (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at ViewModel.WorkerCompleted (SampleModules.Test, Version=2.132.18145.3, Culture=neutral, PublicKeyToken=null)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen (WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)

Please suggest as to handle this issue.

Thanks,

Parameswari

Hi,

I have just strated creating a Telerik WPF application, added a RadButton in a RadWindow and whenever I click on any of the buttons on the Window(minimze, maximize or RadButton) the application crashes. The debugg mode throws System.NullReferenceException: 'Object reference not set to an instance of an object.'

I have added references, of which are Telerik.Windows.Controls, Telerik.Windows.Controls.Data, Telerik.Windows.Controls.Input, Telerik.Windows.Controls.Navigation, Telerik.Windows.Data, for Telerik to the project, version: 2019.1.220.45 (of all references).

The call stack shows this output: 

>Telerik.Windows.Controls.Navigation.dll!Telerik.Windows.Controls.WindowBase.OnGotKeyboardFocus(System.Windows.Input.KeyboardFocusChangedEventArgs e)Unknown
 PresentationCore.dll!System.Windows.UIElement.OnGotKeyboardFocusThunk(object sender, System.Windows.Input.KeyboardFocusChangedEventArgs e)Unknown
 PresentationCore.dll!System.Windows.Input.KeyboardFocusChangedEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget)Unknown
 PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target)Unknown
 PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)Unknown
 PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised)Unknown
 PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args)Unknown
 PresentationCore.dll!System.Windows.UIElement.RaiseTrustedEvent(System.Windows.RoutedEventArgs args)Unknown
 PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs args, bool trusted)Unknown
 PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea()Unknown
 PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input)Unknown
 PresentationCore.dll!System.Windows.Input.KeyboardDevice.ChangeFocus(System.Windows.DependencyObject focus, int timestamp)Unknown
 PresentationCore.dll!System.Windows.Input.KeyboardDevice.TryChangeFocus(System.Windows.DependencyObject newFocus, System.Windows.Input.IKeyboardInputProvider keyboardInputProvider, bool askOld, bool askNew, bool forceToNullIfFailed)Unknown
 PresentationCore.dll!System.Windows.Input.KeyboardDevice.Focus(System.Windows.DependencyObject focus, bool askOld, bool askNew, bool forceToNullIfFailed)Unknown
 PresentationCore.dll!System.Windows.Input.KeyboardDevice.Focus(System.Windows.IInputElement element)Unknown
 PresentationCore.dll!System.Windows.UIElement.Focus()Unknown
 PresentationFramework.dll!System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonDown(System.Windows.Input.MouseButtonEventArgs e)Unknown
 PresentationCore.dll!System.Windows.UIElement.OnMouseLeftButtonDownThunk(object sender, System.Windows.Input.MouseButtonEventArgs e)Unknown
 PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget)Unknown
 PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target)Unknown
 PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)Unknown
 PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised)Unknown
 PresentationCore.dll!System.Windows.UIElement.ReRaiseEventAs(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args, System.Windows.RoutedEvent newEvent)Unknown
 PresentationCore.dll!System.Windows.UIElement.OnMouseDownThunk(object sender, System.Windows.Input.MouseButtonEventArgs e)Unknown
 PresentationCore.dll!System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget)Unknown
 PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target)Unknown
 PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs)Unknown
 PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised)Unknown
 PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args)Unknown
 PresentationCore.dll!System.Windows.UIElement.RaiseTrustedEvent(System.Windows.RoutedEventArgs args)Unknown
 PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs args, bool trusted)Unknown
 PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea()Unknown
 PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input)Unknown
 PresentationCore.dll!System.Windows.Input.InputProviderSite.ReportInput(System.Windows.Input.InputReport inputReport)Unknown
 PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.ReportInput(System.IntPtr hwnd, System.Windows.Input.InputMode mode, int timestamp, System.Windows.Input.RawMouseActions actions, int x, int y, int wheel)Unknown
 PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.FilterMessage(System.IntPtr hwnd, MS.Internal.Interop.WindowMessage msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled)Unknown
 PresentationCore.dll!System.Windows.Interop.HwndSource.InputFilterMessage(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled)Unknown
 WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled)Unknown
 WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o)Unknown
 WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs)Unknown
 WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler)Unknown
 WindowsBase.dll!System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, int numArgs)Unknown
 WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam)Unknown
 [Native to Managed Transition]
 [Managed to Native Transition]
 WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame)Unknown
 WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame frame)Unknown
 PresentationFramework.dll!System.Windows.Application.RunDispatcher(object ignore)Unknown
 PresentationFramework.dll!System.Windows.Application.RunInternal(System.Windows.Window window)Unknown
 PresentationFramework.dll!System.Windows.Application.Run(System.Windows.Window window)Unknown
 PresentationFramework.dll!System.Windows.Application.Run()Unknown
 Project3.exe!Project3.App.Main()Unknown

I cannot find the stack trace since I don't have .pdb files(can't find them(except reporting.wpf.pdb) in the installation folder).

I'm attaching the solution.

I'm using Visual Studio 2017 Community Edition.

Hope you can solve the issue.

Sincerely,

Josip

Hi,

I am using telerik PDF viewer in my wpf application, i am following MVVM pattern to bind pdf to pdf viewer control. I have a PDF content as byte array which on load will be read into memory stream and then loaded to PDF document (code given below).

pdf is loading perfectly and i am able to get the selected page, selected content and  i am also able to save the start & end of the previous selection and apply the same back on the pdf.

currently i am trying to reload a new pdf content and apply the saved selection indexes (start and end) and extract the text between the indexes.

my application runs in background (no ui controls) and the pdf content (byte[]) is fetched from an API and this new content must be loaded to pdfdocument (Telerik.Windows.Documents.Fixed.PdfDocumentSource) and the saved indexes must be re applied and the content between the selected region must be extracted.

problem is when i load the byte[] then there is no error but the documentsource.Document is null . how do i get this working ? can i apply the selection indexes to Fixed.PdfDocumentSource and read selection content.

below is the code that i am using. 

Note: i am passing command descriptors to viewmodel constructor.

 <telerik:RadPdfViewer x:Name="pdfViewer" RenderOptions.BitmapScalingMode="HighQuality" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Row="1" DocumentSource="{Binding PDFDocument,Mode=TwoWay}" Mode="TextSelection">
  </telerik:RadPdfViewer>

    private Telerik.Windows.Documents.Fixed.PdfDocumentSource _PDFDocument;
    /// <summary>
    /// Pdf Document Source
    /// </summary>
    public Telerik.Windows.Documents.Fixed.PdfDocumentSource PDFDocument {
      get {
        return _PDFDocument;
      }
      set {
        _PDFDocument = value;
        OnPropertyChanged("PDFDocument");
      }
    }
     /// <summary>
    /// 
    /// </summary>
    private void LoadPDFDocument(byte[] pdfdata) {
      if (pdfdata != null) {
        MemoryStream DocumentStream = new MemoryStream(pdfdata);
        Telerik.Windows.Documents.Fixed.FormatProviders.FormatProviderSettings settings = new Telerik.Windows.Documents.Fixed.FormatProviders.FormatProviderSettings(Telerik.Windows.Documents.Fixed.FormatProviders.ReadingMode.OnDemand);
        PDFDocument = new Telerik.Windows.Documents.Fixed.PdfDocumentSource(DocumentStream, settings);
      }
    }