RichTextBox: NullReferenceException when loading a document with a continuous section break.

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Last Updated: 27 Sep 2024 05:16 by ADMIN

Ivan

Created on: 26 Sep 2024 10:19

Category: RichTextBox

Type: Bug Report

RichTextBox: NullReferenceException when loading a document with a continuous section break.

NullReferenceException when loading a document with a continuous section break.

2 comments

ADMIN

Dimitar

Posted on: 27 Sep 2024 05:16

Hi Ivan,

Thanks for sharing this. Please note that we keep detailed internal description for the issues as well.

Regards,
Dimitar
Progress Telerik

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Ivan

Posted on: 26 Sep 2024 16:38

Here is a stack trace that relates to the scenario:

System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Windows.Documents.Layout.SectionLayoutBox.MeasureOverride(SizeF availableSize)
   at Telerik.Windows.Documents.Layout.LayoutElement.MeasureCore(SizeF availableSize)
   at Telerik.Windows.Documents.Layout.LayoutElement.Measure(SizeF availableSize)
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.MeasureOverrideInternal(SizeF availableSize)
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.MeasureOverride(SizeF availableSize)
   at Telerik.Windows.Documents.Layout.LayoutElement.MeasureCore(SizeF availableSize)
   at Telerik.Windows.Documents.Layout.LayoutElement.Measure(SizeF availableSize)
   at Telerik.Windows.Documents.Model.RadDocument.Measure(SizeF measureSize)
   at Telerik.Windows.Documents.UI.DocumentPrintLayoutPresenter.MeasureOverride(Size availableSize)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.ContextLayoutManager.UpdateLayout()
   at System.Windows.UIElement.UpdateLayout()
   at Telerik.Windows.Documents.UI.DocumentPresenterBase.Telerik.Windows.Controls.IDocumentEditorPresenter.UpdateLayout()
   at Telerik.Windows.Controls.RadRichTextBox.<>c__DisplayClass620_0.<UpdateEditorLayout>b__0()
   at Telerik.Windows.Controls.RadRichTextBox.UpdateEditorLayout(Boolean focusCarret, Boolean updateCaretSize, Boolean async)
   at Telerik.Windows.Controls.RadRichTextBox.UpdateEditorLayout(Boolean async)
   at Telerik.Windows.Controls.RadRichTextBox.UpdateEditorLayout()
   at Telerik.Windows.Controls.RichTextBoxUI.Dialogs.Styles.StyleDataCollection..ctor(RadDocument document, RadRichTextBox snapshotRichtextBox, Int32 snapshotWidth, Int32 snapshotHeight, Boolean addClearAllStyle, Boolean onlyPrimary)
   at Telerik.Windows.Controls.RichTextBoxUI.StylesGallery.SetQuickStyleItemSource(RadRichTextBox radRichTextBox)
   at Telerik.Windows.Controls.RichTextBoxUI.StylesGallery.RadRichTextBox_DocumentChanged(Object sender, EventArgs e)
   at Telerik.Windows.Controls.RadRichTextBox.OnDocumentChanged()
   at Telerik.Windows.Controls.RadRichTextBox.set_Document(RadDocument value)
   at Magnet.Sierra.View.Behavior.RichTextBoxProperty.OnDocumentChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) in C:\code\products\sierra\Magnet.Sierra.View\Behavior\RichTextBoxProperty.cs:line 56
   at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
   at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
   at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
   at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp, Boolean preserveCurrentValue)
   at System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)
   at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange)
   at MS.Internal.Data.ClrBindingWorker.OnSourcePropertyChanged(Object o, String propName)
   at MS.Internal.Data.PropertyPathWorker.OnPropertyChanged(Object sender, PropertyChangedEventArgs e)
   at System.Windows.WeakEventManager.ListenerList`1.DeliverEvent(Object sender, EventArgs e, Type managerType)
   at System.Windows.WeakEventManager.DeliverEventToList(Object sender, EventArgs args, ListenerList list)
   at System.ComponentModel.PropertyChangedEventManager.OnPropertyChanged(Object sender, PropertyChangedEventArgs args)
   at CommunityToolkit.Mvvm.ComponentModel.ObservableObject.OnPropertyChanged(PropertyChangedEventArgs e)
   at Magnet.Sierra.ViewModel.Document.Content.EditorDocumentContent.set_Document(RadDocument value) in C:\code\products\sierra\Magnet.Sierra.ViewModel\obj\Debug\net6.0-windows\CommunityToolkit.Mvvm.SourceGenerators\CommunityToolkit.Mvvm.SourceGenerators.ObservablePropertyGenerator\Magnet.Sierra.ViewModel.Document.Content.EditorDocumentContent.g.cs:line 25
   at Magnet.Sierra.ViewModel.Document.Content.EditorDocumentContent.LoadInternal() in C:\code\products\sierra\Magnet.Sierra.ViewModel\Document\Content\EditorDocumentContent.cs:line 94
   at Magnet.Sierra.ViewModel.Document.Content.DocumentContentBase.Load() in C:\code\products\sierra\Magnet.Sierra.ViewModel\Document\Content\DocumentContentBase.cs:line 29
   at Magnet.Sierra.ViewModel.AppLayoutViewModel.<OnSelectedSectionChanged>d__44.MoveNext() in C:\code\products\sierra\Magnet.Sierra.ViewModel\AppLayoutViewModel.cs:line 80
   at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0(Object state)
   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)

Here is another stack trace that relates to the scenario:

System.NullReferenceException: Object reference not set to an instance of an object.
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.UpdateChildIndexesDownToParagraph(LayoutBox layoutBox, HashSet`1 documentLists)
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.UpdateChildIndexesDownToParagraph(LayoutBox layoutBox, HashSet`1 documentLists)
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.UpdateChildIndexesDownToParagraph(LayoutBox layoutBox, HashSet`1 documentLists)
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.UpdateChildIndexesDownToParagraph(LayoutBox layoutBox, HashSet`1 documentLists)
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.UpdateChildIndexesDownToParagraph(LayoutBox layoutBox, HashSet`1 documentLists)
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.UpdateChildIndexesDownToParagraph(LayoutBox layoutBox, HashSet`1 documentLists)
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.UpdateParagraphInListSorting()
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.MeasureOverrideInternal(SizeF availableSize)
   at Telerik.Windows.Documents.Layout.DocumentLayoutBox.MeasureOverride(SizeF availableSize)
   at Telerik.Windows.Documents.Layout.LayoutElement.MeasureCore(SizeF availableSize)
   at Telerik.Windows.Documents.Layout.LayoutElement.Measure(SizeF availableSize)
   at Telerik.Windows.Documents.Model.RadDocument.Measure(SizeF measureSize)
   at Telerik.Windows.Documents.UI.DocumentPrintLayoutPresenter.MeasureOverride(Size availableSize)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.ContextLayoutManager.UpdateLayout()
   at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
   at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
   at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
   at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
   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)