I have 4 tabs in my program and a treeview. What I want to do is when I click certain nodes in my treeview the first 2 tabs are disabled and it automatically goes to tab3.
example

Treeview(root)
--Tree1
-----Tree2
--Tree3
-----Tree4
-----Tree5

If I click on Tree 2,4 or 5 then tab1 and tab2 will disable and tab3 and tab4 will be enabled will goto tab3 automatically.

Just the opposite if click in tree 1 or 3, tab3 and tab4 will be disabled and tab1 and tab2 will enable and goto tab1 automatically.