notfound_text.Clear()
For i As Integer = 0 To notfound_nodes.Count - 1
   With notfound_nodes(i)
      'übergeordneter Pfad
      Dim li As Integer = .FullPath.LastIndexOf("\"c)
      Dim searchpath As String = .FullPath.Substring(0, li)
 
      'übergeordneter Knoten im zweiten Treeview 
      Dim tncomp As TreeNode = FindNodeByFullPath(trv2.Nodes, searchpath)
 
      Dim comparevalue As String
      If tncomp IsNot Nothing AndAlso tncomp.Nodes.Count > 0 Then
         'übergeordneter Knoten und Unterknoten (= geänd. Wert) ....
         comparevalue = tncomp.Nodes(0).Text
      Else
         comparevalue = "nicht vorhanden"
      End If
 
      'überg. Knoten und beide Werte notieren
      notfound_text.Append _
        (searchpath & "  " & .Text & " --> " & comparevalue & vbNewLine)
 
   End With
Next i