一起谈.NET技术，XML和实体序列化和反序列化

 /// <summary>
    /// 序列化帮助类
    /// </summary>
    public class SHelper
    {
        /// <summary>
        /// 对象到XML-----泛类型
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="obj"></param>
        /// <returns></returns>
        public static string SaveXmlFromObj<T>(T obj)
        {
            if (obj == null) return null;
            XmlSerializer serializer = new XmlSerializer(typeof(T));
            MemoryStream stream = new MemoryStream();
            XmlTextWriter xtw = new XmlTextWriter(stream, Encoding.UTF8);
            xtw.Formatting = Formatting.Indented;
            try
            {
                serializer.Serialize(stream, obj);
            }
            catch { return null; }
            stream.Position = 0;
            string returnStr = string.Empty;
            using (StreamReader sr = new StreamReader(stream, Encoding.UTF8))
            {
                string line = "";
                while ((line = sr.ReadLine()) != null)
                {
                    returnStr += line;
                }
            }
            return returnStr;
        }
        /// <summary>
        /// XML到反序列化到对象----支持泛类型
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="data"></param>
        /// <returns></returns>
        public static T LoadObjFromXML<T>(string data)
        {
            using (MemoryStream stream = new MemoryStream())
            {
                using (StreamWriter sw = new StreamWriter(stream, Encoding.UTF8))
                {
                    sw.Write(data);
                    sw.Flush();
                    stream.Seek(0, SeekOrigin.Begin);
                    XmlSerializer serializer = new XmlSerializer(typeof(T));
                    try
                    {
                        return ((T)serializer.Deserialize(stream));
                    }
                    catch { return default(T); }
                }
            }
        }
    }