databinding to nested collection object asp.net

I need to work on a scenario.. where I pull up a list of report as a collection of object and have to display that on the left pane.

and based on what i select on the left pane in asp.net page, I need to show the particular collection on the right pane.

what would be the right approach on this?

should i use, the listview or datalist or listbox or repeater on the left pane and I wanted to use the ajax to show the right pane baesd on what i select on left.

would appreciate if you could point me in right direction or any relevant link or sample sourcecode.

thanks
Albin