In Development
Last Updated: 29 Sep 2023 05:18 by ADMIN

The RadRibbonWindow titlebar is higher than expected when the Windows 11 theme is used. 

A side effect of this is that the content overlaps the titlebar, when the content is not a RadRibbonView. 

This reproduces when the Windows11 and Crystal themes are used. To reproduce it, the IsWindowsThemeEnabled property should be set to false in order for the Telerik theme to get applied to the window.

To work this around, you can use the visual tree helper methods in the Loaded event of RadRibbonWindow in order to get the corresponding visuals and change their size and offset.

private void RadRibbonWindow_Loaded(object sender, RoutedEventArgs e)
	var windowDecoratorPanel = this.ChildrenOfType<Grid>().FirstOrDefault(x => x.Name == "MaximizeWindowDecorator");
	var titleBarPanel = windowDecoratorPanel.FindChildByType<Grid>();
	titleBarPanel.RowDefinitions[0].Height = new GridLength(30);

	var clientArea = windowDecoratorPanel.ChildrenOfType<Border>().FirstOrDefault(x => x.Name == "PART_ClientAreaBorder");
	clientArea.Margin = new Thickness(0);

Pending Review
Last Updated: 28 Sep 2023 14:24 by Karthika
When the focus gets in RadRichTextBox, AutomationProperties.Name is not pronounced by screen readers (for example by Windows Narrator).
Last Updated: 28 Sep 2023 12:42 by ADMIN
Release R3 2023

The ShowBalloonTip method allows you to provide a System.Drawing.Icon object to show a custom icon in the balloon notification. However, the method doesn't work when this overload is used. The balloon notification is not displayed at all. 

To work this around, use the predefined BalloonTipIcon icons with the additional overload of the method.

notifyIcon.ShowBalloonTip( "title", "text", BalloonTipIcon.Warning);

Last Updated: 28 Sep 2023 11:12 by ADMIN
Release R3 2023

TypeNameParserException is printed in the Output pane of Visual Studio, when RadNavigationView is initialized. The exception message is:

MS.Internal.Xaml.Parser.GenericTypeNameParser.TypeNameParserException: 'Prefix 'helpers' does not map to a namespace.'

This happens because of a known issue in the Visual Studio designer, which is discussed here.

This issue can be safely ignored. It won't cause issues in the control at runtime.

Last Updated: 28 Sep 2023 10:49 by ADMIN
The UI freezes if the DropDownContent of RadDropDownButton has a native Run element and the CloseOnPopupMouseLeftButtonUp property is set to True.
Last Updated: 28 Sep 2023 10:38 by Caesar
Undo of action with lists in not recovering the original state of the document.
Last Updated: 28 Sep 2023 06:55 by ADMIN
Release R3 2023
Item is automatically selected when pressing the tab key to leave the control.
In Development
Last Updated: 28 Sep 2023 05:10 by ADMIN
Shift + Left arrow navigation selects the entire word instead of the previous letter when inside a table. 
Last Updated: 27 Sep 2023 12:20 by ADMIN
Release R3 2023
The data validation error message box has an invalid size when shown multiple times
Last Updated: 26 Sep 2023 19:08 by alex
Created by: Stefan Nenchev
Comments: 2
Category: GridView
Type: Feature Request

Last Updated: 26 Sep 2023 16:07 by Stenly
The virtualization logic of the group headers expects equal sizes, in order to improve the performance with a lot of appointments. Currently, we do not have an option to restrict or specify a maximum size (width or height depending on the orientation of the view definition).
Last Updated: 26 Sep 2023 12:25 by ADMIN
Created by: Bill
Comments: 3
Category: UI for WPF
Type: Feature Request

I just completed an evaluation of the RadPdfProcessing library for our medical practices. Unfortunately, we are not yet able to use this library for our application. We need to be able to annotate patient visit reports when visit notes require amendments or when we appeal billing decisions. We do this frequently and we need a way to automate this tedious and time consuming process. While the vision for the RadPdfViewer (ref. Unifying the Power of PdfViewer & PdfProcessing: Edit a PDF with our Newest Secret (6/12/2020)) was promising, there are still some issues for us. Following is a list of areas where we would like to see improvements:

1. We need the ability to add notes (like when editing is enabled in the AddDocumentContent_WPF sample application). But also be able to control font, font size, bolding, underlining, and highlighting and text color. Also we need to be able to go back and edit text and text formatting after new text is added and the text editing window closes. This is not yet possible. Ideally, this text also needs to allow multiple text fragments (Run's) where each text fragment can have its own formatting (bolding, color, etc.).


2. Each note needs to be in an optional bubble or box with an optional line or arrow to the highlighted (or strike-through) text in the original document. It would also be helpful if the bubble could be reshaped and moved to a more optimum location while maintaining the connecting line to the associated highlighted text. Automatically positioning the bubble when it is first created in adjacent white space is also desired.


3. We need the ability to highlight, do strike-through and/or enclose text in a colored oval or rectangle in the original pdf without impacting pagination of the original document. 

4. We would like the above functionality to be implemented via a right click context menu for selected text in the original document. A command like "strike-through text and open note would be ideal". 


5. If possible we also would like to pre-edit a pdf file as a RadFixedDocument and perform some or all of the above operations before the document is displayed in the RadPdfViewer. To do this we will need to be able to search for text in a given location in the pdf, select that text and then perform the desired operations (described above in 3. and 4.). This is needed for a majority of the changes that we need to make, that is, in sections of the document that we know from experience always require the same annotations. We see this functionality being integrated with AI enabled processes that are able to find and prepare billing appeals and assist with patient record amendments.

Respectfully, Bill Goforth, Professional Imaging LLC, Medical Systems Development, 360-528-1844

In Development
Last Updated: 25 Sep 2023 13:30 by ADMIN
RadRichTextBox: Creating a new document fragment from imported document adds empty paragraph at the end.
Last Updated: 25 Sep 2023 07:06 by ADMIN
Created by: Petar
Comments: 0
Category: SyntaxEditor
Type: Feature Request
Add support for successful typing text with IME - Chinese, Japanese, Korean etc.
Currently there are input issues, selection issues, caret issues when using IME input.
Last Updated: 22 Sep 2023 14:20 by Martin Ivanov

Currently, on drag/drop of the layout the RadLayoutControl is creating new LayoutControlGroup when needed. This happens in a private static method and the developer doesn't have access to this operation.

Add a virtual method that allows you to override the creation of the LayoutControlGroup. This way a custom LayoutControlGroup implementation can be provided or the group created by default can be adjusted manually.

Pending Review
Last Updated: 22 Sep 2023 12:37 by Bartosz


I would like to report that Z-index have unexpected values when RadDiagramContainerShape are used.

Please watch video first, my remarks points to the video attached to the ticket.

1. Currently there is a possibility that Container A can be hidden by Container B and this is fine.(~11sec of movie)

2. However then i will add Container C to Container A and then drag Container B to overlaps Container A it overlaps only Container A and does not overlaps Container C which for end-user could be very confusing, why Container C is visible at that time.(~20-30 sec of movie)

The problem gets more complicated when i drop Container B to overlaps Container A but without adding Container B as a child of Container A.

In that way it looks that children of Container A are children of Container B

3. When i will add new container "Header" to Container B and then overlaps Container A and Container C then its even more mixed up(~ 30-50 sec of movie)

4. When i will add new container "Header" to Container A and Z-index are somehow refreshed and then in magic way Container_C now overlaps "Header" container from Container B(~58sec of movie)

I would expect:

Fix calculation of Z-index in that way if Container B overlaps Container A it means it overlaps as well it's children. Currently you have flat hierarchy of VMI containers which leads to such Z-index issues. 


Expose possibility to override your internal methods which calculates the Z-index.

Last Updated: 21 Sep 2023 13:49 by Martin Ivanov
The memory consumption is increasing each time the Document property is changed at runtime. This memory doesn't get collected by the GC. To reproduce this, the Document property changes should happen with a small time interval between them. For example, several consecutive button clicks. Also, in order for that to be presented, the RadPdfViewerNavigationPane should be used and bound to the RadPdfViewer.

The issue is not reproducible if there is enough time between the Document changes, so that the UI is properly loaded.

To avoid the memory leak, avoid using the RadPdfViewerNavigationPane.
Last Updated: 21 Sep 2023 11:12 by Naval
Nested tables with empty cells are not correctly imported. 
Last Updated: 21 Sep 2023 11:08 by Martin Ivanov
Changing the DataContext at runtime, will trigger reset of the collection view in the internal view model of RadDataPager. This sets the PageIndex to -1 just the before the context is actually changed, which leads to wrong value in the view model.

To work this around, instead of using data bindings for the panging properties (PageIndex, PageSize, ItemCount), sync them with the view model, manually in code-behind.
Pending Review
Last Updated: 21 Sep 2023 09:26 by Bartosz


I would like to report that automatic generate of connection point for Bezier connection is wrongly generated when link is attached to Gliding Connector.

Connection point is generated at the position where link is attached to shape. I think for such use-case you should generate connection point taking into account angle of link in relate to shape and generate connection point a bit moved. When connection point is generated at attach position it makes that the "arrow" of link have wrong angle.

I'm attaching video and your sample solution with my modifications to easier reproduction.

Best regards,


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