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Expanding or collapsing groups is not working correctly when grouping is enabled together with virtualization (Since version


When grouping is used with virtualization expanded groups can not be collapsed, collapsed groups can not be expanded. The expand/collapse icon toggles but data does not change. When there are enough data to scroll down/up so that virtualization process loads some data, then the previous actions take place.

I tried to simulate the problem with a simple template project. I used your source codes from 
https://blazor.syncfusion.com/documentation/datagrid/grouping and added just EnableVirtualization="true"

Attached video shows that it was working with version but it is not working with the latest version ( I tried both Visual Studio 2019 with .Net 5 and VS2022 with .Net 6, results are the same.

Can you please check this problem.

Thanks & kind regards

Attachment: SfGrid_GroupingVirtualization_aa7b3ca3.rar

2 Replies 1 reply marked as answer

RN Rahul Narayanasamy Syncfusion Team March 4, 2022 12:39 AM

Hi Yunus, 

Greetings from Syncfusion. 

We have considered your query as a bug and logged the defect report “Grouping - Expand/Collapse operations are not working with Virtualization” for the same. Thank you for taking the time to report this issue and helping us improve our product. At Syncfusion, we are committed to fixing all validated defects (subject to technological feasibility and Product Development Life Cycle) and will include the fix in our upcoming patch release which is expected to be rolled out on or before mid of March, 2022. Until then we appreciate your patience.  
You can now track the current status of your request, review the proposed resolution timeline, and contact us for any further inquiries through this link.   


RN Rahul Narayanasamy Syncfusion Team April 5, 2022 03:56 AM

Hi Yunus,

We are glad to announce that our Essential Studio 2022 Volume 1 release v20.1.0.47 has been rolled out successfully and in this release, we have included the fix for this issue ” Grouping - Expand/Collapse operations are not working with Virtualization” in our latest NuGet. So kindly update your NuGet to our latest version to resolve the reported issue.

Please find the NuGet package below


Release notes: https://blazor.syncfusion.com/documentation/release-notes/20.1.47?type=all#grid

We thank you for your support and appreciate your patience in waiting for this release. Please get in touch with us if you would require any further assistance. 



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