Your question has already been answered in the support thread you have opened on the same topic. I am posting here the answer as well in order the community to benefit from it.
allows to modify the header text of the group rows. The event is fired when the group header row text is needed. Please refer to the following help article which demonstrates how to customize the group header text: https://docs.telerik.com/devtools/winforms/controls/gridview/grouping/formatting-group-header-row
We kindly ask you to use just one thread for a specific problem to contact us. Posting the same questions numerous times slows down our response time because we will need to review and address two or more tickets instead of one. Moreover, threads are handled according to license and time of posting, so if it is an urgent problem, we suggest you use a support ticket, which would be handled before a forum thread.
Thank you for your understanding.
Dess | Tech Support Engineer, Sr.
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