Hello Walker,
With our current release 2024 Q1 (2024.1.130) a new property is introduced 'ShowCollapsedGroupSummaries'. You can give it a try and if you have any questions don't hesitate to contact us.
this.radGridView1.ShowCollapsedGroupSummaries = true;
Regards, Dimitar Stoyanov Progress Telerik
Love the Telerik and Kendo UI products and believe more people should try them? Invite a fellow developer to become a Progress customer and each of you can get a $50 Amazon gift voucher.
Hello Walker,
The control does not support this behavior out of the box. There is a KB article Show Summary Values for Collapsed Groups in RadGridView which demonstrate how this can be achieved using custom code. Still, this could be a good improvement to the RadGridView control. Until then, you can use the approach in the KB article.
Regards,
Dinko | Tech Support Engineer
Progress Telerik
Love the Telerik and Kendo UI products and believe more people should try them? Invite a fellow developer to become a Progress customer and each of you can get a $50 Amazon gift voucher.