Gtk.TreeStore.AppendNode C# (CSharp) Method

        public TreeIter AppendNode()
        {
            TreeIter iter;
            gtk_tree_store_append (Handle, out iter, IntPtr.Zero);
            return iter;
        }

        public TreeIter AddAddin(AddinHeader info, object dataItem, AddinStatus status)
        {
            addinData [info] = dataItem;
            TreeIter iter;

            if (ShowCategories)
            {
                TreeIter piter = TreeIter.Zero;
                if (info.Category == "")
                {
                    string otherCat = Catalog.GetString("Other");
                    piter = FindCategory(otherCat);
                }
                else
                {
                    piter = FindCategory(info.Category);
                }
                iter = treeStore.AppendNode(piter);
            }
            else
            {
                iter = treeStore.AppendNode();
            }
            UpdateRow(iter, info, dataItem, status);
            return(iter);
        }