Hello maduragnga001:)

You can in fact also use XDocument to deal with your prblem like this by looping the element layer by layer：

public static DataTable GetTickets()
        {
            HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(_myDomain + "/rules/651263.xml");
            request.Method = "GET";
            request.Credentials = new NetworkCredential(_Username, _Password);
            request.ContentLength = 0;

            HttpWebResponse resp = (HttpWebResponse)request.GetResponse();
            StreamReader reader = new StreamReader(resp.GetResponseStream());
            string tmp = reader.ReadToEnd();

            XDocument doc = XDocument.Parse(tmp);
            var result1 = doc.Root.Element("ticket").Element("subject").Value;
            var result2 = doc.Root.Element("ticket").Element("nice-id").Value;
            var result3 = doc.Root.Element("ticket").Element("Description").Value;

        }