I am trying to select a link when a node is clicked on. I thought this would be pretty straight forward by adding the link to the selection collection of the diagram but for some reason the link does not show up selected after the node clicked handler runs. We are using a custom link object but there is nothing in it that has to do with selection. Here is the code which is part of the NodeClicked handler. Any help would be appreciated.

                else if (selectedShapeNode.Tag is RouteLinkTag)
                {
                    int id = ((RouteLinkTag) selectedShapeNode.Tag).ID;
                    foreach (CustomDiagramLink link in currentDiagram.Links)
                    {
                        RouteLinkTag tag = (RouteLinkTag) link.Tag;
                        if (tag.ID == id)
                        {
                            link.Selected = true;
                            currentDiagram.Selection.Items.Add(link);
                            currentDiagram.ActiveItem = link;
                            break;
                        }
                    }
                }