Private Sub flyGrid_NodeCellChange(ByVal sender As Object, ByVal node As NineRays.Windows.Forms.Data.NodeBase, ByVal index As Integer, ByVal value As Object) Handles flyGrid.NodeCellChange
    node.Modified = True
End Sub

[VB]
'modified nodes collector
private modifiedNodes as ArrayList = new ArrayList()

Private Sub flyGrid_NodeCellChange(ByVal sender As Object, ByVal node As NineRays.Windows.Forms.Data.NodeBase, ByVal index As Integer, ByVal value As Object) Handles flyGrid.NodeCellChange
    If (Not modifiedNodes.Contains(node)) Then
       modifiedNodes.Add(node)
    End If
End Sub

dim i as interger
for i = 0 to modifiedNodes.count - 1
MsgBox(modifiedNodes.Item(i).GetType.GetField("colLineSize"))
Next i

[Vb.Net]
Dim i as Integer
For i = 0 To modifiedNodes.Count - 1
  Dim node as NodeBase = modifiedNodes(i)
  MsgBox(node("colLineSize"))
Next i