https://mui.com/x/react-data-grid/column-groups/
Data Grid - Column groups - MUI X
data gridcolumn groupsmuix
https://www.telerik.com/kendo-angular-ui/components/knowledge-base/grid-collapsible-column-groups
Angular Implementing Collapsible Column Groups in Kendo UI for Angular Grid - Kendo UI for Angular
Learn how to create expand and collapse functionality for column groups within the Kendo UI for Angular Grid.
column groupskendo uiangularimplementingcollapsible
https://www.telerik.com/forums/adding-column-groups-dynamically-giving-invalid-column-error
Adding Column Groups Dynamically giving "Invalid Column" error. in UI for ASP.NET AJAX | Telerik...
I am using advanced binding and creating dynamic columns during Page_Init event. Everything works fine except column groups. I am creating column groups bas...