Revit.SDK.Samples.NewHostedSweep.CS.EdgeFetchForm.InitializeTree C# (CSharp) Method

        private void InitializeTree()
        {
            HostedSweepCreator creator = m_creationData.Creator;

            TreeNode rootNode = new TreeNode();
            rootNode.StateImageIndex = (int)CheckState.Unchecked;
            foreach (KeyValuePair<Autodesk.Revit.DB.Element, List<Edge>> pair in creator.SupportEdges)
            {
                Autodesk.Revit.DB.Element elem = pair.Key;
                TreeNode elemNode = new TreeNode("[Id:" + elem.Id.IntegerValue + "] " + elem.Name);
                elemNode.StateImageIndex = (int)CheckState.Unchecked;
                rootNode.Nodes.Add(elemNode);
                elemNode.Tag = elem;
                int i = 1;
                foreach (Edge edge in pair.Value)
                {
                    TreeNode edgeNode = new TreeNode("Edge " + i);
                    edgeNode.StateImageIndex = (int)CheckState.Unchecked;
                    edgeNode.Tag = edge;
                    elemNode.Nodes.Add(edgeNode);
                    ++i;
                }
            }
            rootNode.Text = "Roofs";
            if (creator is SlabEdgeCreator)
            {
                rootNode.Text = "Floors";
            }
            treeViewHost.Nodes.Add(rootNode);
            treeViewHost.TopNode.Expand();
        }