public sealed class ConfigManger

    {

        public XDocument XmlDocs { set; get; }

        string path = @"{0}\Configuration\Server\{1}";

        public ConfigManger()

        {

            LoadFiles();

        }

        public static ConfigManger Instance

        {

            get

            {

                return ConfigCreateXML.Singleton;

            }

        }

        public class ConfigCreateXML

        {

            static ConfigCreateXML() { }

            internal static readonly ConfigManger Singleton = new ConfigManger();

        }

        void LoadFiles()

        {

            string filePath = string.Format(path, AppDomain.CurrentDomain.BaseDirectory, "ServerPath.config");

            if (XmlDocs == null)

            {

                XmlDocs = XDocument.Load(filePath);

            }

        }

    }