Styles - Application crashes when trying to modify newly added CharacterStyle twice

Hello,

I have an issue with the RichEdit Control. You can do the following to reproduce.

1. Add this method to the Styles.cs in the RichEditMainDemo sample:

C#
private static void AddStyles(RichEditControl richEditControl)  
{  
    CharacterStyle cstyle = richEditControl.Document.CharacterStyles["My Heading 1"];  

    if (cstyle == null)  
    {  
        cstyle = richEditControl.Document.CharacterStyles.CreateNew();  
        cstyle.Name = "My Heading 1";  
        richEditControl.Document.CharacterStyles.Add(cstyle);  

        CharacterStyle parentStyle = richEditControl.Document.CharacterStyles["Default Paragraph Font"];  
        if (parentStyle != null)  
        {  
            cstyle.Parent = parentStyle;  
        }  

        cstyle.Bold = true;  
        //cstyle.Italic =  
        cstyle.FontSize = 36;  
    }  
}  

2. Now call this method in the DoShow() Method and you have now created a new style created "My Heading 1".
3. Run the sample and select Styles (updated) and verify that you have a new style called "My Heading 1" in the Styles gallery
4. Mark some text and apply the new style.
5. Modify the "My Heading 1" style in the Modify Style dialog. For example change the font size. and close the dialog.
6. Now try to modify the style again and the demo crashes. I wither shuts down with no stack trace or it closes with following stack trace.

C#
at DevExpress.XtraRichEdit.Model.CharacterProperties.GetCache(DocumentModel documentModel)  
at DevExpress.XtraRichEdit.Model.RichEditIndexBasedObject`1.GetCache(IDocumentModel documentModel)  
at DevExpress.Office.UndoableIndexBasedObject`2.get_InfoCore()  
at DevExpress.Office.UndoableIndexBasedObject`2.get_Info()  
at DevExpress.XtraRichEdit.Model.CharacterPropertiesMerger..ctor(CharacterProperties initialProperties)  
at DevExpress.XtraRichEdit.Model.CharacterStyle.GetMergedCharacterProperties()  
at DevExpress.XtraRichEdit.Model.CharacterStyle.GetMergedCharacterProperties()  
at DevExpress.XtraRichEdit.Model.TextRunBase.GetParentMergedCharacterProperties()  
at DevExpress.XtraRichEdit.Model.TextRunBase.GetMergedCharacterProperties()  
at DevExpress.XtraRichEdit.Model.TextRunBase.get_MergedCharacterFormattingCacheIndex()  
at DevExpress.XtraRichEdit.Model.TextRunBase.get_MergedCharacterFormatting()  
at DevExpress.XtraRichEdit.Model.VisibleTextFilter.IsRunVisibleCore(RunIndex runIndex)  
at DevExpress.XtraRichEdit.Model.VisibleTextFilter.IsRunVisible(RunIndex runIndex)  
at DevExpress.XtraRichEdit.Model.VisibleTextFilterBase.FindVisibleParagraphRunForward(RunIndex runIndex)  
at DevExpress.XtraRichEdit.Layout.Engine.ParagraphIteratorBase..ctor(Paragraph paragraph, PieceTable pieceTable, IVisibleTextFilter visibleTextFilter)  
at DevExpress.XtraRichEdit.Layout.Engine.BeginParagraphFormatting.EnsureParagraphBoxes()  
at DevExpress.XtraRichEdit.Layout.Engine.BeginParagraphFormatting.FormatNextRow()  
at DevExpress.XtraRichEdit.Layout.Engine.DocumentFormatter.FormatNextRow()  
at DevExpress.XtraRichEdit.Layout.Engine.BackgroundFormatter.PerformPrimaryLayoutCore()  
at DevExpress.XtraRichEdit.Layout.Engine.BackgroundFormatter.PerformPrimaryLayout()  
at DevExpress.XtraRichEdit.Layout.Engine.BackgroundFormatter.PerformSecondaryLayout()  
at DevExpress.XtraRichEdit.Layout.Engine.BackgroundFormatter.HandleCommand(Int32 commandIndex)  
at DevExpress.XtraRichEdit.Layout.Engine.BackgroundFormatter.HandleCommand(WeakReference thisWeakRef, Int32 commandIndex)  
at DevExpress.XtraRichEdit.Layout.Engine.BackgroundFormatter.WorkerBody(WeakReference thisWeakRef)  
at DevExpress.XtraRichEdit.Layout.Engine.BackgroundFormatter.Worker(Object parameter)  
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(Object obj)  

I have also seen the following stack track which is almost identical:

C#
at DevExpress.XtraRichEdit.Model.CharacterProperties.GetCache(DocumentModel documentModel)  
at DevExpress.XtraRichEdit.Model.RichEditIndexBasedObject`1.GetCache(IDocumentModel documentModel)  
at DevExpress.Office.IndexBasedObjectA`2.get_InfoCore()  
at DevExpress.Office.IndexBasedObjectA`2.get_Info()  
at DevExpress.XtraRichEdit.Model.CharacterPropertiesMerger..ctor(CharacterProperties initialProperties)  
at DevExpress.XtraRichEdit.Model.CharacterStyle.GetMergedCharacterProperties()  
at DevExpress.XtraRichEdit.Model.CharacterStyle.GetMergedCharacterProperties()  
at DevExpress.XtraRichEdit.Model.CharacterStyle.GetMergedWithDefaultCharacterProperties()  
at DevExpress.XtraRichEdit.Model.CharacterStyle.CopyFrom(DocumentModel targetModel)  
at DevExpress.XtraRichEdit.Model.CharacterStyle.Copy(DocumentModel targetModel)  
at DevExpress.XtraRichEdit.Forms.EditStyleFormController.FillTempRichEdit(IRichEditControl richEditControl)  
at DevExpress.XtraRichEdit.Forms.EditStyleForm.InitializeForm()  
at DevExpress.XtraRichEdit.Forms.EditStyleForm.cbCurrentStyle_SelectedIndexChanged(Object sender, EventArgs e)  
at DevExpress.XtraEditors.Repository.RepositoryItemComboBox.RaiseSelectedIndexChanged(EventArgs e)  
at DevExpress.XtraEditors.ComboBoxEdit.UpdatePopupEditValueIndex(Int32 prevIndex)  
at DevExpress.XtraEditors.ComboBoxEdit.set_EditValue(Object value)  
at DevExpress.XtraEditors.PopupBaseEdit.AcceptPopupValue(Object val)  
at DevExpress.XtraEditors.PopupBaseEdit.UpdateEditValueOnClose(PopupCloseMode closeMode, Boolean acceptValue, Object newValue, Object oldValue)  
at DevExpress.XtraEditors.PopupBaseEdit.DoClosePopup(PopupCloseMode closeMode)  
at DevExpress.XtraEditors.PopupBaseEdit.ClosePopup(PopupCloseMode closeMode)  
at DevExpress.XtraEditors.PopupBaseEdit.ClosePopup()  
at DevExpress.XtraEditors.Popup.PopupListBox.OnMouseUp(MouseEventArgs e)  
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)  
at System.Windows.Forms.Control.WndProc(Message& m)  
at DevExpress.Utils.Controls.ControlBase.WndProc(Message& m)  
at DevExpress.XtraEditors.BaseListBoxControl.WndProc(Message& m)  
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)  
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)  
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)  

Any idea what is wrong?

Thanks
Henrik Skak Pedersen