I a have page with a grid that has a list of reports and a panel which has a user control to input report arguments. When the user clicks on the list or reports, the panel below should change and show the appropriate arguments in the panel. each argument group is a user control. example: when the user clicks a monthly report. The monthly user control should fill the panel. If the user clicks a employee report the last & first name user control should fill the panel. If this is possible, I would like a code example or any assistance..