Unplanned
Last Updated: 11 Mar 2026 09:28 by ADMIN
Anders
Created on: 12 Oct 2020 12:48
Category: UI for Blazor
Type: Feature Request
21
Groupable to be supported with the Virtualization feature of Telerik Grid

Currently working on moving from winform to Blazor and found a feature not supported in Telerik atm.

Getting current error when trying to enable Virtualiztion inside a grid

Groupable is not supported with the Virtualization feature of Telerik Grid

Where im already setting grouping on one of the columns

6 comments
ADMIN
Dimo
Posted on: 11 Mar 2026 09:28

Hello Christian,

Grouping with virtual scrolling (when not loading groups on demand) can be a tricky feature to implement. Currently, when binding the Grid with the OnRead event (which is a common use case with virtualization) the Grid doesn't know the total number of groups (and group headers), which means it cannot calculate the height of its virtual scrollbar. As a result, users will either be unable to reach the bottom row, or the Grid will have to readjust the height of its scrollbar and flicker.

That's why we are keeping this item Unplanned until more customers request it, which will justify the required research and development. In the meantime, if you are aware of a third-party component, which works well in OnRead-like scenarios, I will be curious to take a look. 

Regards,
Dimo
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Christian
Posted on: 05 Mar 2026 08:45

Hi,

any chance that this is ever implemented?

Best Regards,

Christian

ADMIN
Marin Bratanov
Posted on: 01 Jan 2022 10:40

Hi,

The best way to know when something happens is to click the Follow button on the page - this will send you status update emails. For example, when we know which release will have this feature, the page will be updated with that information and you will get an email.

Regards,
Marin Bratanov
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Nemo
Posted on: 10 Nov 2021 20:06
Hi, this is a critically needed feature to port existing Winforms apps to Blazor and would be very helpful. What are your plans for this feature? Thanks.
ADMIN
Marin Bratanov
Posted on: 01 Mar 2021 17:24

Hello,

A quick update, Group Load on Demand can work with virtualization: https://docs.telerik.com/blazor-ui/components/grid/grouping/load-on-demand 

 

Regards,
Marin Bratanov
Progress Telerik

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ADMIN
Marin Bratanov
Posted on: 15 Oct 2020 08:36

Hi Anders,

Grouping is not supported with row virtualization. You can find the limitations of the row virtualization here: https://docs.telerik.com/blazor-ui/components/grid/virtual-scrolling#limitations

If you want to use grouping, you need to use the "regular" paging at the moment.

I am marking this as "unplanned" because we have tentative plans to look into this in the middle of 2021 and this page will be updated when we get to reviewing the scenario.

 

Regards,
Marin Bratanov
Progress Telerik

Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at https://learn.telerik.com/.