Since we are working with large TreeViews users some times get confused about the current parent of an Element.

It would be useful if the parents of on element would sticky to the top of the control. 

Similar to functionatlity of the Sticky Group Headers for the RadGridView or the newly introduced Sticky scroll in Visual Studio

https://docs.telerik.com/devtools/wpf/controls/radgridview/grouping/stickygroupheaders

Create a SlideView control like the one in the Telerik UWP suite.
https://docs.telerik.com/devtools/xamarin/controls/slideview/slideview-getting-started

The control should  have a content area, previous and next buttons, and dots indicator below, that indicates the currently selected page.

If a formula contains a named range as an argument, its value may not get updated properly in the following scenario:

In the formula: =SUMIF(A1:A4, 3, ColumnC), ColumnC is a named range refering to C1:C4. Range A1:A4 contains the values 3, 2, 2, 3, which will avoid a circular reference. The formula is entered twice, in C2 and C3. Note that these cells are part of the range ColumnC refers to. When you refresh the formula in C3 (enter edit mode, then press enter), it will calculate correctly, but the formula in C2 will be recalculated to an error. If you refresh the formula in C2, the formula in C3 will be evaluated to an error.

I use RadWindow as the main window for my application (primarily because I want to embed a menu in the title bar).  This works well except our users have reported a bug where they are unable to use hotkeys following activating the application from the TaskBar.

A typical scenario:

* minimise the application using the minimise button

* some time later, activate the app by clicking on the TaskBar icon

* Press CTRL+N hotkey combination which should execute a command

I have created a sample application that shows two windows: a regular Window and a RadWindow.  They both contain input bindings for the Ctrl+N combination.  When the regular window is activated from the taskbar, the input bindings work, but when the same sequence of events is performed on the RadWindow the input bindings do not work.  Clicking between the windows does work - it seems the problem is only related to application activation.

On a related note, both windows contain a TextBox control.  If text is highlighted in the regular window, the highlighted text is maintained and redisplayed when the window is activated.  This does not work for the RadWindow.  As it relates to keyboard focus, I wonder if the problem is related.

i hope add char   controls

like :

https://developers.google.com/chart/interactive/docs/gallery/timeline

https://github.com/dreamRs/timelineschart

I have created this timeline control out of a combination of different controls.  But I get asked for this same kind of setup from different companies for different reason. I have created this control using your TreeListView to show the headers in the hierarcy while for Layer Num items, there is a list to the right which holds a list of MediaItem objects.  It works but not very efficient and is missing much key functionality. And I thought because you already have controls that are similar, it wouldn't be a huge reach for you to make on like this.

So there could be two modes for this.  The editing mode where the user is dragging/dropping media items on each layer item, rearranging, setting the length of media, etc.  They could then hit PLAY like a Movie Maker and see a preview on a different control of what is being played.  Once this is saved, it could be used in another way.

So in the readonly mode, all the items would be feed in as a hierarchtial collection.  It would decribe how many levels there are and the names and order of the items.  And then it would also have all the MediaItems related to each Layer Num.  And then it would constantly be fed what the current time is related to this batch of items playing.  The user doesn't hit PLAY in this mode but rather just sees a read only version of what is being played and watch the line goes across.

I think this would be a very welcomed control to your lineup.   Because anyone who wants to make a media editing program, audio editing program, and even showing a schedule for items that happens every 30 seconds in different locations while getting a constant status of the current time would find this  invaluable.

I want to be able to specify the font family, size, etc. from XAML, not from code. 
Exactly the same as described here:
https://www.telerik.com/forums/implicit-styles-custom-font-and-font-size

(background: We are developing a UI Framework + resource dictionary for use in different applications. If each app will have to modify font sizes from code, inconsistencies are surely happen)

When focusing a Rad Controls like RadDateTimePicker, the watermark is hidden. This behavior could be very problematic when this field is the first of a form. The user will never see the watermark because the focus will be set in this field when entering in the form. It would be nice if the watermark could just be less visible by lowering its opacity. Additionaly, if the user erases the text, it would be nice too if the watermark could be showed at the same visible state than explained above.

Hi there,

If you want to change the hover colour of the RadHyperlinkButton font, you currently need to create a copy of the control template and override the styles that you want to change.

It would be much easier for developers if the hover font properties could be surfaced into the VS property editor so we can simply select a colour, font weight etc...

Hi

I would like to know if Progress Telerik has some plan to port their WPF controls to Avalonia (avaloniaui.net).

Thanks

Laurent

ArgumentNullException is thrown in the GetNameCore method of the RadGlyphAutomationPeer class. This happens when the Glyph property of RadGlyph is not set and the automation peer for the corresponding element kicks-in.

To work this around, disable the automation peers.

AutomationManager.AutomationMode = AutomationMode.Disabled;