Hello Telerik Team,

I'm implementing HeaderContext filtering with checkbox lists on a RadGrid in a legacy ASP.NET WebForms application. 

Current Setup:
- FilterType="HeaderContext"
- FilterCheckListEnableLoadOnDemand="true"
- OnFilterCheckListItemsRequested event populates checkboxes from session data

Issue:
Users experience 500-2000ms delay when opening filter menus (AJAX callback to server). 
In our production environment with slow network and high concurrent users, this creates 
poor user experience.

Questions:
1. Is there a way to pre-populate checkbox lists during grid initialization 
   (avoiding AJAX callback)?
2. Can we use OnItemCreated to populate checkbox lists with 
   FilterCheckListEnableLoadOnDemand="false"? If so, what's the correct approach?
3. Is there a client-side caching mechanism for checkbox list items?
4. What's the recommended pattern for large datasets (1000+ rows) with multiple 
   filterable columns?

Environment:
- Telerik.Web.UI version: v4.0.30319
- .NET Framework: 4.8
- Browser: Chrome, IE11
- Grid has ~10 columns with 5 using checkbox filters

Any guidance on performance optimization would be greatly appreciated!

Thank you,
Anurag pandey

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I know this document lists the current controls that support ARIA - http://docs.telerik.com/devtools/aspnet-ajax/controls/wai-aria-support-and-screen-readers

Thanks,
Mike

Hi
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Thanks

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2. The Comments user interface.
3. Certain strings in the Undo menu.

See attached.

Provide keyboard support for the MediaPlayer.

Some of the occurring problems are:

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Keyboard navigation is required for 508 accessibility support. Generally the space bar is used to start/stop video and tabs are used to access the playbar features like expand, vol and CC

Hi, 

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If this can be a bug fix it would benefit everyone, otherwise, if you have a code suggestions that is helpful. Image attached. 

Thank you.

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I am reaching out in regards of an update we need to resolve a vulnerability in our system. I am not aware if my company has a license already but I was informed that we could get the hotfix by opening a ticket. Please let me know if there is another method to get the hotfix.

Contact email: carlos.diaz@cenace.gob.mx

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video link:- https://jam.dev/c/c1cdf56c-53ab-4218-8774-65907b3efd6d 

Business Need - User Story Terminology:

As a Telerik Support Specialist, I would like our programmers to incorporate new code which will treat hyphens as if it were a space upon ExportToPdf() so that we gracefully handle for scenarios where a very long word with a hyphen will wrap to the next line instead of overlapping other content.

 

RadGrid.MasterTableView.ExportToPdf() - we would like telerik to update logic to do a normal word wrap when a hyphen exists rather than not wrapping when there's not enough room in the grid cell | View Ticket | Your Account

Please create a method that will convert the old expressions to new format and make them re-usable again.

I like to add my own buttons in the toolbar, for example to open new Windows, add more text to the description, specify if I like or dislike the picture.

Currently, the TreeView is expecting touch events (touchstart, touchmove, touchend) to be triggered by touch devices,  while the Magic keyboard sends mouse events.