I've created a small test class to extend the Treenode object and am
having mixed success.

In the Treeview's 'BeforeExpand' event I've used code from the help
topic "Adding Custom Information to a TreeView or ListView Control"

I've been able to add nodes of myTreeNode type to the treeview and
verify that they really are myTreeNode type nodes but haven't been
able to get this part figured out.

Thank you for any help,

    Don

The 'CType' line produces the following error:

    'System.InvalidCastException'
    Additional information: Specified cast is not valid.

Private Sub tvSnips_BeforeExpand(REMOVED) Handles tvSnips.BeforeExpand

       Dim mynode As myTreeNode
       mynode = CType(e.Node, myTreeNode) <-------ERROR
       MessageBox.Show("Node selected is " & mynode.NodeParent)

End Sub

Public Class myTreeNode
   Inherits TreeNode
   Private mintParent As Integer

   Public Enum enumNodeType
       Dummy = -1
       Group = 0
       Leaf = 1
   End Enum

   Public nt As enumNodeType

   Public Property NodeType() As enumNodeType
       Get
           Return nt
       End Get
       Set(ByVal Value As enumNodeType)
           nt = Value
       End Set
   End Property

   Public Property NodeParent() As Integer
       Get
           Return mintParent
       End Get
       Set(ByVal Value As Integer)
           mintParent = Value
       End Set
   End Property
End Class