1. Run the attached code.

2. Group by "Abbreviation" and "IDName"  (shown as "A" in attached image file)

3. Now Drag "IDName" and move as first Group By. (result is shown as "B" in attached image file)

When we change the group by order, I also want to order the grid colums same as group by columns order. i.e. First time grid colums were in "Abbreviation, IDName, ID" order, when group by order changed (i.e.  "IDName" became first group by), it should show columns order as   "IDName, Abbreviation, ID"  (shown as "C" in attached image file)

Is this possible?