public class XMLHelper

{

    /// <summary>

    /// 对象序列化成 XML String

    /// </summary>

    public static string XmlSerialize<T>(T obj)

    {

        string xmlString = string.Empty;

        XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));

        //using (TextWriter textWriter = new StreamWriter("D:\\xmlTest.xml"))

        //{

        //    xmlSerializer.Serialize(textWriter, obj);

        //}

        using (MemoryStream ms = new MemoryStream())

        {

            xmlSerializer.Serialize(ms, obj);

            xmlString = Encoding.UTF8.GetString(ms.ToArray());

        }

        return xmlString;

    }

    /// <summary>

    /// XML String 反序列化成对象

    /// </summary>

    public static T XmlDeserialize<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;

    }

}

[Serializable]

[XmlType(TypeName = "MySong")]

public class Song

{

    [XmlElement("A")]

    public string Artist;

    [XmlElement("S")]

    public string SongTitle;

}

class XMLDemo

{

    static void Main(string[] args)

    {

        List<Song> list = new List<Song>()

        {

            new Song(){ SongTitle="歌曲标题1",Artist="歌手1"},

            new Song(){ SongTitle="歌曲标题2",Artist="歌手2"},

            new Song(){ SongTitle="歌曲标题3",Artist="歌手3"}

        };

        string xmlString = XMLHelper.XmlSerialize(list);

        /*<?xml version="1.0"?>

        <ArrayOfSong xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

          <Song>

            <Artist>歌手1</Artist>

            <SongTitle>歌曲标题1</SongTitle>

          </Song>

          <Song>

            <Artist>歌手2</Artist>

            <SongTitle>歌曲标题2</SongTitle>

          </Song>

          <Song>

            <Artist>歌手3</Artist>

            <SongTitle>歌曲标题3</SongTitle>

          </Song>

        </ArrayOfSong>

        // 自定义标签名

        <?xml version="1.0"?>

        <ArrayOfMySong xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

          <MySong>

            <A>歌手1</A>

            <S>歌曲标题1</S>

          </MySong>

          <MySong>

            <A>歌手2</A>

            <S>歌曲标题2</S>

          </MySong>

          <MySong>

            <A>歌手3</A>

            <S>歌曲标题3</S>

          </MySong>

        </ArrayOfMySong>

        */

        Console.WriteLine(xmlString);

    }

}