Unplanned
Last Updated: 28 Aug 2026 16:56 by Robert
Johan
Created on: 28 Nov 2023 07:58
Category: Grid
Type: Feature Request
26
Render one page of rows above the current page in a virtual Grid
When scrolling up in a virtual Grid, the rows "above" are not be kept or loaded like when scrolling down, and it takes a while before they get loaded and shown. This behaviour is not very user friendly and should be corrected.
6 comments
Robert
Posted on: 28 Aug 2026 16:56

Virtual Grid scrolling also has a problem when the user is fast scrolling downwards. The grid has a large virtualized dataset. Since Blazor Server's server-round-trip rendering model does not catch up in time with the scrolling, up or down, the data cannot be fetched fast enough to populate the grid That is why the rows looks greyed out or blank cells, if you remove the skeleton. It is very inconvenient for users to see greyed out data or blank cells when they are scrolling through the grid looking for specific data.

You can see the problem clearly in Telerik's example: 

https://www.telerik.com/blazor-ui/documentation/components/grid/virtual-scrolling#rowheight 

Go to the Example section and do a fast scroll up or down in the grid. Do you see the greyed out data?

Please fix ASAP.

Johan
Posted on: 16 Oct 2025 17:41
I know for a fact this is possible, far from easy, but possible. This is the top one feature our users are asking for. It could cement a decision to keep using Telerik components and I'm sure this goes for other organizations too. 
Jerome
Posted on: 16 Oct 2025 17:27
Would like this feature for everywhere that features a virtual scroll mode. Ex: TreeList
ADMIN
Dimo
Posted on: 15 Sep 2025 14:27

Hi Bram,

I must admit that this feature is not planned for our next release in November. However, I see a recent spike in popularity (customer votes), so I notified Product Management to keep this item on their radar for 2026.

Regards,
Dimo
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Bram
Posted on: 15 Sep 2025 09:52

No solution in sight?

To properly use Grid Virtualization this seems like a necessity, so I find it strange this is not being addressed. One could argue this can be classified as a bug, because preloading is simply not working in some cases.

Sukesh
Posted on: 05 Jun 2024 15:31
When is this feature planned ? Also causing lot of slowness in when scrolling up or down after filtering