Last Updated: 09 Aug 2022 04:30 by ADMIN
Release LIB 2022.2.815 (15 Aug 2022)
Created by: Petar
Comments: 0
Category: Spreadsheet
Type: Bug Report
Having more than one rule over a cell range and managing the rules through the "Manage Rules" dialog so they switch priority does nothing and the cells do not update.
Under Review
Last Updated: 08 Aug 2022 17:00 by Patrick

Latest version of wpf ui on NET6 I receive this error with Office2019 theme, also tested with Office2016 theme and there is no error.

System.Windows.Markup.XamlParseException: "Die Angabe eines Werts für "System.Windows.Markup.StaticResourceHolder" führte zu einer Ausnahme."
Exception: Die Ressource mit dem Namen "RepeatButtonStyle" kann nicht gefunden werden. Bei Ressourcennamen wird die Groß- und Kleinschreibung berücksichtigt.

Diese Ausnahme wurde ursprünglich von dieser Aufrufliste ausgelöst:
    System.Windows.StaticResourceExtension.ProvideValueInternal(System.IServiceProvider, bool)
    MS.Internal.Xaml.Runtime.ClrObjectRuntime.CallProvideValue(System.Windows.Markup.MarkupExtension, System.IServiceProvider)


I have a RadComboBox which is causing the error. When I remove this element, error is gone. Error only happens when I click on the drowdown. The error happens before dropdown open.

I use this files
<ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/System.Windows.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.Input.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.Navigation.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.DataVisualization.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.GridView.xaml" />
        <ResourceDictionary Source="/Telerik.Windows.Themes.Office2019;component/Themes/Telerik.Windows.Controls.RibbonView.xaml" />

In Development
Last Updated: 08 Aug 2022 14:52 by ADMIN
Selecting the whole column and then opening the Charts dialog makes the app hang
Last Updated: 08 Aug 2022 13:31 by ADMIN
Release LIB 2022.2.815 (15 August 2022)
We could include this functionality in the event arguments of the CellDecorationsNeeded event, similarly to the way that the Foreground and Background properties are set. This way, the cells will have more customization options.
Last Updated: 08 Aug 2022 08:47 by ADMIN
Release LIB 2022.2.808 (08 August 2022)

Setup: In a WPF Windows Desktop application project, use a RadTabControl with 2 tabs, Tab 1 and Tab 2. Add a RadDocking and some Panes to Tab 1.

Run the application and do:

  • Put one RadPane into floating mode
  • Go to Tab 2
  • Notice how the floating pane is hidden (good)
  • In Windows, select Switch User, but when the login screen is shown just re-enter your credentials to get back into your Windows session
  • Notice how the floating pane is visible despite the application still showing Tab 2  (not good)
  • Move the pane a bit, crash

I've attached a sample project showing the problem, with similar instructions as above. Tested with both 2021.3.1123 and 2022.2.622.

Please advice!

Last Updated: 07 Aug 2022 10:10 by ADMIN
Created by: Paolo
Comments: 2
Category: VirtualKeyboard
Type: Bug Report

Our company would like to use in a greenfield project this new UI component.

On our machine, in both our sample projects and even running your official WPF Demo App, the virtualkeyboard component does not render its buttons correctly.


This is our sample xaml:


<Window x:Class="TelerikWpfApp1.MainWindow"
                Title="MainWindow" Height="350" Width="525">
        <telerik:RadVirtualKeyboard DefaultKeyboardLayout="Compact" HorizontalAlignment="Stretch" />


In the attachment you can see how the virtualkeyboard renders ootb. Are we missing something?

In Development
Last Updated: 06 Aug 2022 11:47 by ADMIN
Scheduled for R3 2022
Created by: Martin Ivanov
Comments: 0
Category: UI for WPF
Type: Feature Request
Add a circular progress bar control.
Last Updated: 05 Aug 2022 15:55 by Jason
Release LIB 2022.2.808 (8 Aug 2022)
In a grouped scenario, when removing items from the source collection, multiple items can be removed from the VirtualizingWrapPanel causing gaps to appear in the items. 
Last Updated: 05 Aug 2022 12:11 by ADMIN
Release R3 2022
Created by: Rosen Vladimirov
Comments: 3
Category: PivotGrid
Type: Feature Request
Similar to Excel - RadPivotGrid could have an area, where you can select some filter/group descriptions.
Last Updated: 05 Aug 2022 10:11 by ADMIN
Release LIB 2022.2.808 (08 Aug 2022)

RichTextBox: The RepeatButtonStyle is not merged in the RichTextBox Xaml file when declaring the styles on a window level.


Workaround: Add the dictionaries to the App.xaml file instead of the Window file.

Last Updated: 05 Aug 2022 09:19 by ADMIN
Release R3 2022
Created by: Peshito
Comments: 1
Category: ChartView
Type: Feature Request
Support for displaying error bars
Last Updated: 05 Aug 2022 05:45 by ADMIN
Selecting the same date after Undo operation in Date content control does not select the date.
Last Updated: 04 Aug 2022 16:18 by ADMIN
Release LIB 2022.2.808 (08 Aug 2022)

User is not able to select the current date wen Date Picker content control is used.

Select another date and then the current one as a workaround.

Last Updated: 04 Aug 2022 12:39 by Caesar

In my usage scenario,  I want to allow the users to do some specific actions like changing the font or inserting a table row in those restricted areas.

My current implementation is to modify the source code of RadRichTextBox, expose RespectDocumentProtection and RespectNonDeletableRanges, and temporarily set these properties to false before performing modifications in those restricted areas.

Currently, the properties are available in RadDocumentEditor only.

Last Updated: 03 Aug 2022 13:48 by ADMIN
Release LIB 2022.2.808 (08 Aug 2022)

If there is an empty cell with a permission range and you go to it by pressing the Tab key from the previous cell and then start typing it removes the annotation range. If the cell with the permission range is not empty and the same technique is used there is an InvalidOperationException thrown with the message: "Selection contains uneditable ranges".

Here is a workaround:

this.radRichTextBox.CommandExecuted += this.RadRichTextBox_CommandExecuted;
private void RadRichTextBox_CommandExecuted(object sender, CommandExecutedEventArgs e)
    if (e.Command is TabForwardCommand)
        DocumentPosition caret = this.radRichTextBox.Document.CaretPosition;
        if (caret.IsPositionInsideTable)
            DocumentSelection selection = this.radRichTextBox.Document.Selection;
            DocumentPosition start = selection.Ranges.First.StartPosition;
            DocumentPosition end = selection.Ranges.Last.EndPosition;
            Inline currentInline = start.GetCurrentInline();
            if (currentInline is PermissionRangeStart)

            Inline previousInline = end.GetPreviousInline();
            if (previousInline is PermissionRangeEnd)


First, you need to subscribe to the CommandExecuted event. Then change the selection after a TabForwardCommand to exclude the PermissionRangeStart and PermissionRangeEnd elements. Your workaround also works, so there is no need to change it.

Last Updated: 03 Aug 2022 12:47 by ADMIN
Release LIB 2022.2.808 (08 Aug 2022)
When a non-breaking space appears after a letter and punctuation symbol, it is not respected and the line can break on it.
Last Updated: 03 Aug 2022 10:38 by Martin Ivanov

Currently, when you click F2 or double mouse click in order to start editing a cell (with a TextBox editor) its text gets selected. This happens because the SelectAll() method of the underlying TextBox is called. Add a property that allows to disable this behavior and to avoid selecting the text.

At this point you can get this effect by creating a custom column and overriding its PrepareCellForEdit() method as shown here: 

Last Updated: 03 Aug 2022 10:35 by Caesar

Importing a document with block-level content controls from XAML causes them to become corrupt. If you scroll to a position in which the said control is only partially visible a NullReferenceException is thrown.

A possible workaround would be to initially save the document as a DOCX (just exporting it to DOCX will not fix the issue as the information is already corrupt).

Last Updated: 03 Aug 2022 09:17 by ADMIN
Release LIB 2022.2.808 (08 Aug 2022)
The localization key used for the UndoGroup is for the permission ranges and puts a record with a wrong name inside the History stack.
Last Updated: 02 Aug 2022 11:38 by ADMIN
Created by: Vladimir
Comments: 2
Category: AutoCompleteBox
Type: Feature Request

Please add a simple way to show "Clear all" button in a MultiSelect mode to clear all selected items, so we don't have to customize entire control template. Added properties could be at least those: IsClearAllButtonVisible and ClearAllButtonTemplate.


Best regards,


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