Hi,
I am generating a diagram with tree layout.
where nodes that do not have grandchildren should be arranged vertically and those who have grandchildren should be arranged horizontally.

I was able to do this but some of horizontal nodes and vertical nodes are crossing each other.
How to layout this so that no nodes are crossed or overlapped. Please help?

I have used following code:


For Each item As DiagramItem In DG.Items
If TypeOf item Is TableNode Then
Dim tablenode As TableNode = CType(item, TableNode)

If tablenode.Tag IsNot Nothing Then
If tablenode.OutgoingLinks.Count <= 0 Then
Dim immidiateParentNode As TableNode = tablenode.IncomingLinks(0).Origin
'if immidiate parent have grand childrens then arrang horizontally else vertically
If Not HasGrandChildren(immidiateParentNode) Then
If Not m_VerticalItemParents.Contains(immidiateParentNode) Then
m_VerticalItemParents.Add(immidiateParentNode)
End If
Else
m_HorizontalItems.Add(tablenode)
End If
Else
m_HorizontalItems.Add(tablenode)
For Each tablelink As DiagramLink In tablenode.OutgoingLinks
m_HorizontalItems.Add(tablelink)
Next
End If
End If
End If

Next

tree.Arrange(DG, m_HorizontalItems)


If m_VerticalItemParents.Count > 0 Then
For Each item As DiagramNode In m_VerticalItemParents
For Each childlink As DiagramLink In item.OutgoingLinks
childlink.Destination.AnchorPattern = Diagramming.AnchorPattern.LeftInRightOut
Next

t.KeepRootPosition = True
t.Type = Diagramming.Layout.TreeLayoutType.Cascading
t.Direction = Diagramming.Layout.TreeLayoutDirection.LeftToRight
t.Root = item
t.Arrange(DG)
Next

End If