Novacode.DocX.merge_endnotes C# (CSharp) Method

        private void merge_endnotes(PackagePart remote_pp, PackagePart local_pp, XDocument remote_mainDoc, DocX remote, XDocument remote_endnotes)
        {
            IEnumerable<int> ids =
            (
                from d in endnotes.Root.Descendants()
                where d.Name.LocalName == "endnote"
                select int.Parse(d.Attribute(XName.Get("id", w.NamespaceName)).Value)
            );

            int max_id = ids.Max() + 1;
            var endnoteReferences = remote_mainDoc.Descendants(XName.Get("endnoteReference", w.NamespaceName));

            foreach (var endnote in remote_endnotes.Root.Elements().OrderBy(fr => fr.Attribute(XName.Get("id", r.NamespaceName))).Reverse())
            {
                XAttribute id = endnote.Attribute(XName.Get("id", w.NamespaceName));
                int i;
                if (id != null && int.TryParse(id.Value, out i))
                {
                    if (i > 0)
                    {
                        foreach (var endnoteRef in endnoteReferences)
                        {
                            XAttribute a = endnoteRef.Attribute(XName.Get("id", w.NamespaceName));
                            if (a != null && int.Parse(a.Value).Equals(i))
                            {
                                a.SetValue(max_id);
                            }
                        }

                        // We care about copying this footnote.
                        endnote.SetAttributeValue(XName.Get("id", w.NamespaceName), max_id);
                        endnotes.Root.Add(endnote);
                        max_id++;
                    }
                }
            }
        }