TreeView as Grid column

[Bob]

Is it possible to put a TreeView as a column of a Grid? Could you send me a sample project that does this? Or is there a better way to do what I want? My goal is to have a grid of public agencies that, when the tree corresponding to one agency is expanded, the lobbyists that work for that agency are shown under the agency. So one row of the grid (unexpanded) would look like:

Agency                       Q1                Q2                Q3               Q4                Year
+ AGENCY NAME        $100.00        $100.00        $100.00        $100.00        $400.00

When expanded, the grid row would look like:

Agency                       Q1                Q2                Q3               Q4                Year
- AGENCY NAME        $100.00        $600.00        $150.00        $100.00        $950.00
     LOBBYIST1            $50.00         $50.00          $50.00          $50.00          $200.00
     LOBBYIST2            $50.00         $50.00          $50.00          $50.00          $200.00
     BROCHURES         $0.00           $0.00            $50.00          $0.00            $50.00
     CONTRACTS          $0.00           $500.00        $0.00            $0.00            $500.00

Thanks in advance for any help!

Bob