/// <summary>
        /// +写配置文件
        /// </summary>
        /// <param name="Path">配置文件的路径</param>
        /// <param name="nKey">配置文件中你要该的节点名称</param>
        /// <param name="nValue">修改的节点值</param>
        public static void UpdateConfig2(string Path,string NodePath,string Value)
        {
            XmlDocument xml = new XmlDocument();
            xml.Load(Path);
            XmlNode node = xml.SelectSingleNode(NodePath);
            node.InnerText = Value;
            xml.Save(Path);
        }

        /// <summary>
        /// 读取配置文件
        /// </summary>
        /// <param name="Path">配置文件的路径</param>
        /// <param name="key">读取的XML文件中的键</param>
        /// <returns>返回该健得值</returns>
        public static string ReadConfig2(string Path,string xmlPath){
            System.Xml.XmlDocument xml = new System.Xml.XmlDocument();
            xml.Load(Path);
            XmlNode node = xml.SelectSingleNode("/Root/MultipleShop/key");
            if(node!=null){
                return node.InnerText;
            }else{
                return "";
            }
        }