Create XML using C#

using (System.Xml.XmlWriter writer = System.Xml.XmlWriter.Create(Server.MapPath("~/employees.xml")))

            {

                writer.WriteStartDocument();

                writer.WriteStartElement("Employees");

                DataTable DT = new DataTable();

               

                for (int i = 0; i < DT.Rows.Count; i++)

                {

                   writer.WriteStartElement("Employee");

                   writer.WriteElementString("ID", DT.Rows[i]["ID"].ToString());

                   writer.WriteElementString("FirstName", DT.Rows[i]["Name"].ToString());

                   writer.WriteElementString("Surname", DT.Rows[i]["Surname"].ToString());

                   writer.WriteElementString("Mobile", DT.Rows[i]["Mobile"].ToString());

                    writer.WriteEndElement();

                }

                writer.WriteEndElement();

                writer.WriteEndDocument();

            }