TreeView Control: Highlight Multiple Nodes?

[Mel]

I have a treeview control that contains a list of filenames which I am
searching. If a file in the tree matches the search criteria the
entire node is expanded. Often times there are other files in that
expanded node that don't match the criteria. Is there a way to
highlight ALL the nodes that matched the search criteria?
Example Code (Using ASP.NET 2.0, Visual Basic):
Protected Sub btnSearch_Click (ByVal sender As Object, ByVal e As
System.EventArg s) Handles btnSearch.Click 'THIS IS MY SEARCH BUTTON
Dim find As Boolean = False
tvDocs.Collapse All()
Search(txtSearc h.Text, tvDocs.Nodes(0) , find) 'FIND THE
SEARCH CRITERIA IN THE TREE
If find = True Then tvDocs.Nodes(0) .Expand()

End Sub

Protected Sub Search(ByVal key As String, ByVal n As TreeNode,
ByRef find As Boolean)
Dim child As TreeNode
For Each child In n.ChildNodes
If (child.Text.ToL ower().StartsWi th(key.ToLower( ))) Then
ExpandParent(ch ild)
child.Selected = True 'WHEN THIS LOOP FINISHES ONLY
THE LAST NODE IS HIGHLIGHTED!
find = True
End If
Search(key, child, find)
Next
End Sub

Protected Sub ExpandParent(By Val n As TreeNode)
n.Expand()
If (Not n.Parent Is Nothing) Then
ExpandParent(n. Parent)
End If
End Sub