#region 序列化XML文件

        /// <summary> 

        /// 序列化XML文件 

        /// </summary> 

        /// <param name="type">类型</param> 

        /// <param name="obj">对象</param> 

        /// <returns></returns> 

        public static string Serializer(Type type, object obj)
        {

            MemoryStream Stream = new MemoryStream();

            //创建序列化对象 

            XmlSerializer xml = new XmlSerializer(type);

            try
            {

                //序列化对象 

                xml.Serialize(Stream, obj);

            }

            catch (InvalidOperationException)
            {

                throw;

            }

            Stream.Position = 0;

            StreamReader sr = new StreamReader(Stream);

            string str = sr.ReadToEnd();

            return str;

        }

        #endregion