I dont think that is possible within a default datagrid. There is a drag and drop widget though that you can use with a listview. With some styling you can achieve the same looks:
https://appstore.home.mendix.com/link/app/36773/
Hello,
I am trying to implement this widget, dragging and dropping works, but there are two issues:
Working in Mendix 7.23.12 by the way.
Any assistance is greatly appreciated!