对象序列化为字符串

有点用....

        static string Ser<T>(Type type, object obj, string fileName)
        {
            try
            {
                XmlSerializer ser = new XmlSerializer(type); 
                MemoryStream sw = new MemoryStream();
                StreamReader sr = new StreamReader(sw, Encoding.ASCII);

                ser.Serialize(sw, obj); 
                sw.Position = 0;
                string ret = sr.ReadToEnd();
                return ret;

            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }
            return "";
        }