Loading refined treeview from the list

Hi,
  I have a list of objects and also its object path. I have a search pattern selection where in i will select the specific search patterns (Like A to B, A to Z etc..).I can load my objects to the treeview by using recursion, My real problem is to load the refined object list in treeview, am i missing anything? i m not sure about that. Here the challenge is if child satisfies regex pattern it  has to display parent also...Can anybody please help about it

Regards
Harsha