m_ConfigFullPath XPathNavigator.SelectSingleNode.Value;

(string configfile ="Config.xml")

        {

            m_ConfigfileName = configfile;

            StringBuilder FileFullPath = new StringBuilder(Application.StartupPath);

            FileFullPath.Append(@"\").Append(m_ConfigfileName);

            m_ConfigFullPath = FileFullPath.ToString();

        }

XPathDocument   m_ConfigDoc = new XPathDocument(m_ConfigFullPath);

 XPathNavigator   m_ConfigNavigator = m_ConfigDoc.CreateNavigator();

configNode = System.Xml.XPath.XPathNavigator.SelectSingleNode

 XPathNavigator node = ConfigNavigator.SelectSingleNode("/Config/Configure/@value");

string m_SecondCheck = node.Value;