Hi.

I just started to work with Z-Leveling with ControlNodes.
I have two Nodes on my diagram, where one is Level 0 and the other is Level 1. When I just load this config it is like it shoulb be. But when I click one of these nodes (even it is the node on the bottom of the ordering) it is shown in front of the other nodes. this confuses a little bit. How can I configure the diagram this way, that the z-Level ordering isn't changed when I click on a node.

Another Question: When an object is behind another object and I want to move this, is it possible to show only the handles of this object? So the user has the possibility to move this object, even it is behind other nodes.

Thanks for help.

I allready tried "SelectionOnTop" but it is still not working. When I click on a node it is paint on the top.

Hi.

Thanks. That worked for me.
But there is another problem I recognized:
I create my ControlNode like this:

ControlNode node = new ControlNode(diagram);
diagram.Nodes.Add(node);
node.ZIndex = (int)itemVO.ZLevel; 

I stored the ZLevel in my ItemVO. But when I step through these lines of code, node.ZIndex is still 0 after doing the last line. Why?

Can you help me with this?

Thanks again.

Ah OK. I managed this task by assigning my safed zlevel after creating all objects. But the diagram do not show this actualized configuration. it has still the ordering from the beginning. is there something like redraw, update or refresh for the diagram or diagramview so that the changes in zleveling is shown?

Hi again.

OK this problem is solved thanks a lot.

But there are two things:

1.) What about Links. When I draw a link it is allways behind all other objects. Can Links also use bringtofront?

2.) When I have a controlNode above another, there is no possibility to select this. Only when I the click behavior of the node is "IgnoreControl" is set. But this I can not set. Even the Handles are not drawn of an object that lies on top of the Z Order.

What can i do?

Thanks again.

Thats the problem. We do not want to use WPF in our application.

So what possibilities do I have to bring an image in the background (apart from the backgroundimage property of the diagram). It should be sizable and moveable like the other nodes too. Is there another kind of node/item which I can use in this context?
This is the only place where I need to 1. draw Links above other Items and 2. bring this Item into background (this is allready solved).
But again, we can't  use the backgroundproperty because of User Interaction to the BackgroundImageItem.

Thanks a lot for all the help.

I know that this sounds strange but we need a lot of interaction with this Item. User can set Image, Anchoring,... so first it has to be a usercontrol

But I will try to use this shapenode.
Thanks.

Thanks. I think that this willl work for me.

I use the Routing Options of the diagram. All Links are routed automatically. Can I exclude some objects from this routing algorithm? So that the shapeNodes for the Background are not used in routing, but controlnodes are used?

Hi again.

I work with this proposal:

private void SyncZOrder()
{
foreach (DiagramItem item in diagram.Items)
{
ControlNode host = item as ControlNode;
if (host != null)
host.Control.BringToFront();
}
}

The problem was, that when i click on my ControlNode, the hosted Control was brought to front. With this segment I make thie diagram displaying the nodes in the right z-ordering. Now there is the Problem, that when there are more than five control nodes on the diagram, this segment take a long time. so it takes about a second until the node is selected. this is not usable. does anyone know another way to avoid that "bring to front" "shuffles" the z-ordering of my node (only in display)

I even tried node.Intersects but even when the nodes are way away from each other this functions says Intersects = true...

Thanks again