Connection Remover Question

right now, to swap out graphs on my user interface I have to clear the edges and nodes using inefficient foreach loops

      IList<DiagramConnection> removeConnectionList = ds.Diagram.Connections.Cast<DiagramConnection>().ToList();
        foreach (DiagramConnection connection in removeConnectionList)
        {
            ds.Diagram.Connections.Remove(connection);
        }

        IList<DiagramNode> removeNodeList = ds.Diagram.Nodes.Cast<DiagramNode>().ToList();
        foreach (DiagramNode node in removeNodeList)
        {
            ds.Diagram.Nodes.Remove(node);
        }  

what I would like to do is to use something like

ds.Diagram.Nodes.Clear()

ds.Diagram.Connections.Clear()

however, the diagram surface never notices that the connections/nodes are removed and still draws them.

Any suggestions?

Hello, thanks for this feedback

I've implemented the support for this now. This bug fix will be in the next nightly build which will be available at around 1200 GMT and will be downloadable from here: http://www.mindscapehq.com/products/wpfelements/nightly-builds

Note that you'll only need to clear the Nodes collection - as this will automatically result in the connections being cleared.

Another alternative is to create a new DiagramModel instance and set it to the DiagramSurface.Diagram property. This has slightly better performance and keeps the previous diagram intact - which can be garbage collected if you don't hold any references to it.

Let me know if you have further questions

-Jason Fauchelle