How can I get fullpath treeview selectednode index ?

[Nicomendox]

In an Explorer Prog. Treeview Like this :

First Drive:\
Folder A
SubFolder A
SubFolder B
SubFolder C

Folder B
SubFolder A1
SubFolder A2
SubFolder A3

Folder C
SubFolder AA
SubFolder BB
SubFolder CC
SubFolder DD

Folder D
SubFolder AB
SubFolder BC
SubFolder CD
SubFolder DE
SubFolder EF

NUMBER OF INDEXES:

First Drive index is (0)

Folder A index is (0)
SubFolder A1 index is (0)
SubFolder A2 index is (1)
SubFolder A3 index is (2)

Folder B index is (1)
SubFolder A1 index is (0)
SubFolder A2 index is (1)
SubFolder A3 index is (2)

Folder C index is (2)
SubFolder AA index is (0)
SubFolder BB index is (1)
SubFolder CC index is (2)
SubFolder DD index is (3)

Folder D index is (3)
SubFolder AB index is (0)
SubFolder BC index is (1)
SubFolder CD index is (2)
SubFolder DE index is (3)
SubFolder EF index is (4)


for excample

when I Select Folder C and Subfolder DD I want to get index Tree like this : (0,2,3) (Drive Node, Folder Node, SubFolder Node)
OR

when I Select Folder D and Subfolder EF I want to get index Tree like this : (0,3,4) (Drive Node, Folder Node, SubFolder Node)

How can I get this information ?

 Private Sub Button10_Click(sender As Object, e As EventArgs) Handles Button10.Click
        MsgBox(TreeView1.SelectedNode.Parent.Index & "" & TreeView1.SelectedNode.NextNode.Index & "" & TreeView1.SelectedNode.NextNode.Index)

    End Sub

but not Get Drive Node and can not get the node if there are more Subfolder...