Also another issue, I use my own structures for serializing info about created nodes and links: Bounds for nodes, and Origin+Destination+Line points for links. I'm still experiencing problems with recreating the original layout with this information: Links are somehow stubborn - even though I set manually number of segments and every point on the connection line, the lines go through different places the before.
So the question is, if I know origin node, destination node and the shape where the link was before, how to create new graph with the same items and same link positions?
for now I use:

DiagramLink item = new DiagramLink(diagram, origin, destination)
    {Style = LinkStyle.Cascading, SegmentCount = (short) (link.Points.Count - 1)};
for (int i = 0; i < link.Points.Count; i++) item.ControlPoints[i] = link.Points[i];
origin.OutgoingLinks.Add(item);
destination.IncomingLinks.Add(item);
item.Route(); 

The StraightenLongLinks works perfectly, thanks, looking forward to final 5.3.2 version

But the problems with recreating links still persists.
It looks like this: when the diagram is created, it looks quite good, but once node is moved, links no longer looks cascading. After some investigation I found, that the anchor points are in right places, but the direction of link direction from node is not up/down, but left - it looks weird in top-middle or bottom-middle anchor point. How could this happen?
Edit: solved using

CascadeOrientation = Orientation.Vertical 

Oh My God, It's Full of Switches


And another question, if I use switch:

MultipleGraphsPlacement = MultipleGraphsPlacement.MinimalArea 

in LayeredLayout, is it possible to set minimal horizontal and vertical distance between each graph? Now they are really tightly coupled together and it doesn't look well.

Another question - if I got two nodes, that are connected with two links with same direction (two independent relations between them). Both links got Text value set. Is there a way how to arrange them automatically in a way, that both text labels are readable, not overlapping?

I've got this issue for quite a long time: When I select a group nodes - about 6, some of them linked, and I want to layout hem into layered or tree layout. But if I call my layout method, selected nodes are moved automatically to the upper left location of diagram. Is there a way to, that these layouted nodes will be moved to:
- empty space somewhere in diagram
- the center point of the their previous location
Using root node is a good idea, but not every time is possible to select the right root node.

And other question, can you give me some hint, which layouting mechanism might be best for this situation:
I've got a diagram with dozens of nodes, they are of three kinds currently, but there might be more kinds in the future. They are in linked in generic (visual studio class-like) diagram.
I use Layered layout now, but sometimes nodes are placed quite strangely...
Any recommendation?
It should be graph aligned to some grid, it should look compact and it needs to be easy to identify all relations there.
Example:

Using LayeredLayout.Margins is not a good idea, because this value is used for each graph in selection when using MultipleGraphsPlacement switch. There should be some easy way how to preserve the location of selected nodes when layouting.
Also it looks, that it does not work as expected
For example when current selection has bounds: X960, Y160, W90, H115, then I set  layeredLayout.margins = new SizeF(bounds.Location), but after Arrange call the selection is moved to some freaky location X1495 Y240.

The solution is probably moving layouted nodes selection manually in code to chosen location, there's no build in method, is it?

Also another idea, if I set root node in LayeredLayout, nodes from other subgraphs are not layouted at all. That's normal behavior? Is there a way to layout yeach subgraph in it's root and then put these subgraphs aligned next to each other?

Thanks for help, I've solved the issue with my own methods for moving group of nodes around Diagram.

Is there an event, that is fired right after creating of new link using dragging is canceled by releasing pressed mouse button? There's about 12 Link events, but none of them is especially for this purpose as far as I know.

This version adds NodeCreateCancelled and LinkCreateCancelled events:
https://mindfusion.eu/_beta/fcnet_cancelcreate.zip

I hope that helps,
Stoyan