Thanks for the reply.
Right now, the grid to defaults, to showing 10 rows of data. When they select (click on) a row, I would like to collapse the other 9 rows (not show them), so the grid will only show the header + the selected row.
When they mouse back over the selected row, then all the rows of the grid will show again.
As soon as they click on a row (or off the grid), the grid collapses back again to the header + the selected row.
Does that help?