Read and write XML

public static void ReadXML()
        {
            XmlDocument xmldoc = new XmlDocument();
            xmldoc.Load(xmlFilePath);
            XmlElement xmlelem = xmldoc.DocumentElement;
            XmlNodeList nodelst = xmldoc.SelectNodes("/Employees/Emp");
            var tempnode = xmldoc.InnerText;
            var tempnode1 = xmldoc.InnerXml;
            XmlNodeList nodelst1 = xmlelem.ChildNodes;
        }

public static void WriteXML()
        {
            XmlDocument xmldoc = new XmlDocument();
            xmldoc.Load(xmlFilePath);

            XmlNode node = xmldoc.CreateNode(XmlNodeType.Element, "EMP", "");
            XmlNode IDElement = xmldoc.CreateElement("ID");
            IDElement.InnerText = "5";
            XmlNode nameElement = xmldoc.CreateElement("Name");
            nameElement.InnerText = "Manoj";
            XmlNode deptElement = xmldoc.CreateElement("Dept");
            deptElement.InnerText = "30";
            node.AppendChild(IDElement);
            node.AppendChild(nameElement);
            node.AppendChild(deptElement);
            xmldoc.DocumentElement.AppendChild(node);
            xmldoc.Save(xmlFilePath);
        }