Hi Stoyan,

When I click on any expand button, all its incoming link and their associated nodes get deleted. This happen when I set diagram.ExpandOnIncoming = true.

But if I set diagram.ExpandOnIncoming = false, all outgoing links and their associated nodes gets deleted.

What I do now, I don't want to delete any node or link while click on expand button.

Please help as soon as possible.

Thanks,
Bala

I did this but problem is still same.Is their any other property which needs to be set or reset?

This is working well in my sample application but in my main application it is not working.I have used this code in my main application.

Declared these event in constructor,

diagram.ExpandButtonPosition = ExpandButtonPosition.OuterLowerRight;
	     diagram.ExpandButtonAction = ExpandButtonAction.RaiseEvents;
	     diagram.ExpandButtonClicked += new NodeEventHandler(diagram_ExpandButtonClicked); 

and Made a function to handle diagram_ExpandButtonClicked(); which is,

void diagram_ExpandButtonClicked(object sender, NodeEventArgs e)
	 {
	     if (pop != null)
	     {
		   pop.Close();
		   pop = null;
	     }
	     ShapeNode sourceNode = e.Node as ShapeNode;
	     if (sourceNode != null)
	     {
		   OpenPopUp(sourceNode);
	     }

	 } 

.

Now please give some idea where may be the problem?

Thanks in advance,
Bala