RestoreExpandedChildRows will only works for hierarchical table. Currently, there is no native property / function available to restore the grouped rows.

However, a workaround is available, by buffering the expanded grouped row to a temporary variable and re-expand the selected group row after the flypostback is finished. In your case, the batch update. Attached is a demonstration of the workaround.

Tried on Virtual Load Mode , the preloaded group rows works fine, but the non-preloaded group row will not expand, the status keeps showing "Loading group..." at the same time.

Is there any work around for Virtual Load Mode (for the non-preloaded row)

Best Regards,

Fung

Using the latest build of WebGrid 7 and modfying the earlier attached sample for virtual load by adding PagingMode="VirtualLoad" VirtualPageSize="20", I could not replicate the issue. In my environment all grouped row will expand without any issue.

The latest WebGrid 7 and WebUI Framework 3 is build 406 and build 757.