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directed tree layout and deleting nodes

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98827 Apr 2,2011 09:03 PM UTC Aug 9,2011 08:52 PM UTC ASP.NET Web Forms (Classic) 2
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Tags: DiagramWebControl
Mary Fontana
Asked On April 2, 2011 09:03 PM UTC

I have an application where I build a directed tree.
In this application, I need to be able to clear all nodes and rebuild a new directed tree layout.

I do this:

diagramModel.Nodes.Clear();
diagramModel.Connections.Clear();

MyRebuildTree(); //this also sets a new diagramModel.LayoutRoot node


DirectedTreeLayout tree = new DirectedTreeLayout(diagramModel, diagramView);
tree.RefreshLayout();

I also tried this:


DirectedTreeLayout tree = new DirectedTreeLayout(diagramModel, diagramView);
tree.PrepareActivity(tree);
tree.StartNodeArrangement();
tree.RefreshLayout();
(diagramView.Page as DiagramPage).InvalidateMeasure();
(diagramView.Page as DiagramPage).InvalidateArrange();


The problem I am having is the diagram model's nodes are not being removed/cleared.
When the tree is redrawn the old nodes appear stacked in one corner of the display.

How do you remove nodes/connections from the diagram model?

Thanks in advance,
Mary


Mary Fontana
Replied On April 2, 2011 09:04 PM UTC

sorry I meant this post for the WPF diagram. I will re-post


Brent Snyder
Replied On August 9, 2011 08:52 PM UTC

I am having the same issue. Any update?


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