请助！如何得到VB2010 treeview 当前节点下的最后一个子节点的Key（name）?

Private Sub TreeView1_NodeMouseClick(sender As Object, e As TreeNodeMouseClickEventArgs) Handles TreeView1.NodeMouseClick
        If e.Button = MouseButtons.Left And TreeView1.SelectedNode.Nodes.Count > 0 Then
            Dim node As TreeNode
            For Each node In TreeView1.SelectedNode.Nodes
                Debug.Print(node.Name() & " : " & node.FullPath())
            Next
            If Not node Is Nothing Then
                Debug.Print("Last:" & node.Name() & " : " & node.FullPath() & vbCrLf)
            End If
        End If
    End Sub