TreeView Loading

[PhilPrice]

Hey there,

I seem to be at heads with a bit of a speed problem with the treeview control. I have a sturcture recived from an API which is basically

ROOT NODE
   - Parent
          - Child
          - Child
          - Child
                 - Child
                 - Child
          - Child
    - Parent

The structre is made up of about 2200 items onthis particully repositry. And the filling routine is a very fast resurive some - but it takes a collection of treeview because 5 have to be filled at once.

I have removed all sorting on load from the control - and all new nodes created - in favor of a "at end sort" like this.

Public Sub SortTree(colTree As Collection)
    Dim TreeV As TreeView
    Dim TNode As MSComctlLib.Node
    
    For Each TreeV In colTree
    
        For Each TNode In TreeV.Nodes
            If TNode.Children > 1 Then
                TNode.Sorted = True
            End If
        Next
    Next
End Sub

The problem is when loading - it files up to about 1000 nodes bout 1000-2000 nodes it seems to crawl and get progessivly slower. So is there any tips for overcomthing this - or is the treeview control not made for this load?