c# xml序列化和反序列化

        static public string SerializeToXml<T>(T obj)
        {
            string xmlString = string.Empty;
            //XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
            //using (MemoryStream ms = new MemoryStream())
            //{
            //    xmlSerializer.Serialize(ms, obj);
            //    xmlString = Encoding.UTF8.GetString(ms.ToArray());
            //}
            Encoding encoding = Encoding.UTF8;
            using (MemoryStream memoryStream = new MemoryStream())
            {
                XmlSerializer xmlSerializer = new XmlSerializer(obj.GetType());
                XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();
                namespaces.Add("", "");

                XmlTextWriter xmlTextWriter = new XmlTextWriter(memoryStream, encoding);

                xmlTextWriter.Formatting = Formatting.None;
                xmlSerializer.Serialize(xmlTextWriter, obj, namespaces);
                xmlTextWriter.Flush();
                xmlTextWriter.Close();

                xmlString = encoding.GetString(memoryStream.ToArray());
            }
            return xmlString;
        }

        static public T DeserializeXml<T>(string xmlString)
        {
            T t = default(T);
            XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));
            using (Stream xmlStream = new MemoryStream(Encoding.UTF8.GetBytes(xmlString)))
            {
                using (XmlReader xmlReader = XmlReader.Create(xmlStream))
                {
                    Object obj = xmlSerializer.Deserialize(xmlReader);
                    t = (T)obj;
                }
            }
            return t;
        }

        static public string VerifyXml(string xml)
        {
            string result = string.Empty;
            try
            {
                XmlDocument doc = new XmlDocument();
                doc.LoadXml(xml);
            }
            catch (XmlException ex) { result = ex.Message; }
            return result;
        }

        static public string GetXmlNodeText(string xml, string nodeName)
        {
            string result = string.Empty;
            try
            {
                var doc = new XmlDocument();
                doc.LoadXml(xml);
                XmlNode entityName = doc.SelectSingleNode(nodeName);
                if (entityName != null)
                {
                    result = entityName.InnerText.Trim();
                }
            }
            catch { }
            return result;
        }