Treeview with xmlnodes

Question

I am having an .xml file with contents as a book with chapter , section and page tags.
Now how can i populate my treeview with the chapter name, section name, etc..
Also i should get the section when i select the chapter only.

I have tried but the plus(+) symbol which should be near the node is not present.
What should i do to get the proper treeview with proper indents and names.
Can anybody help me in Code.