AfterCollapse in compact framework

Hi all,

I need to create an expanding and collapsing view with c# which i m making with the use of treeview. I need to make this in Compact framework which has less functionalities then full .net framework.

I need to change the images when i expand the treenode and change image back to the same when the treenode collapses. There is a BeforeExpand event in compact framework, with the use of which i m changing the image when expanding a treenode. But there is no event available in compact framework for tracking collapse of any treenode. So i m not able to change the image when a treenode collapses.

If someone can just make a program in compact framework, with which whenver a treenode collapses, a messagebox saying "Collapsed" appears........then that is Bingo!! what i want....