Recursively Map Tree Node Structure

Hi,

I'm trying to map a tree-node structure and have been racking my brains for the last couple of hours and need some help.

I want to output the structure of a tree view including it's sub-nodes to a string, delimited by a colon.

I have got the code working if the first child nodes do not have any sub-nodes (i.e: root/subnode)

But if any of the subnodes have children, I get stuck!
Please help!

Here's what I have so far.....

VB Code:

Private Sub mapNodes(ByVal myNode As TreeNode)
 
        Dim subNode As TreeNode
 
        'Are we at a root node?
        If myNode.Tag = "root" Then
            nodeMap = "root:"
        End If
 
        'Iterate through each sub-node.
        For Each subNode In myNode.Nodes
            nodeMap += subNode.Text & ":"
 
            'If this node has children, recurse through them...
            If subNode.GetNodeCount(False) > 0 Then
                'Stuck here!!
            End If
        Next
 
    End Sub

Just needed to call the function again!
It's been a long day!!!!

VB Code:

'If this node has children, recurse through them...
            If subNode.GetNodeCount(False) > 0 Then
                mapNodes(subNode)
            End If

Now I just need to find some way of organising the string so that I can accurately re-populate an empty tree-view with the structure. (this string is held in the registry and will be used to re-populate a tree view at runtime).