[RESOLVED] Building a treeview VB.Net 2003

[18experience]

Hi,
I have a treeview built, and it works just like I want it. However, I have to "prime" it with the first level of nodes. After that, I go through each first level node and add nodes to it, and add nodes to its nodes, and .... all the way down recursively. This recursive function, AddNodes, receives a node as its input. So, right now its like this:

BuildTree()
GrabFirstLevelNodes()

for each node in tree
AddNodes(node)

End Sub

Is there any way around this, or is my code just going to have to have this ugly GrabFirstLevelNodes sub? I tried to send the tree itself as a node (figured it was worth a shot), but it isn't the right type.

Any ideas?

Thanks

[jmcilhinney]

Your recursive function should take a TreeNodeCollection as an argument. The Nodes property of the TreeView itself is a TreeNodeCollection, as is the Nodes property of each node. That means that you can pass the Nodes property of the tree itself to the first call and then for each recursive call you pass the Nodes property of a node, e.g.

PopulateNodeCollection(myTreeView.Nodes)

Public Sub PopulateNodeCollection(ByVal nodes As TreeNodeCollection)
    'Add nodes here.
 
    For Each node As TreeNode In nodes
        PopulateNodeCollection(node.Nodes)
    Next node
End Sub

That's a very simple and incomplete example but you get the idea.