/// <summary>

    ///     Xml helper class

    /// </summary>

    public static class XmlHelper

    {

        #region 序列化

        /// <summary>

        ///     XML Serialize

        /// </summary>

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

        /// <param name="encoding"></param>

        /// <returns></returns>

        public static string Serialize<T>(T obj, Encoding encoding = null)

        {

            return Serialize(obj, typeof(T), encoding);

        }

        /// <summary>

        ///     XML Serialize

        /// </summary>

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

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

        /// <param name="encoding"></param>

        /// <returns></returns>

        public static string Serialize(object obj, Type type, Encoding encoding = null)

        {

            return Serialize(obj, type, encoding, null);

        }

        /// <summary>

        ///     XML Serialize

        /// </summary>

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

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

        /// <param name="encoding"></param>

        /// <param name="types"></param>

        /// <returns></returns>

        public static string Serialize(object obj, Type type, Encoding encoding, params Type[] types)

        {

            var serializer = new XmlSerializer(type, types);

            var sb = new StringBuilder();

            using (var writer = new EncodingStringWriter(sb, encoding))

            {

                var namespaces = new XmlSerializerNamespaces();

                namespaces.Add("", "");

                serializer.Serialize(writer, obj, namespaces);

                return sb.ToString();

            }

        }

        /// <summary>

        ///     XML Deserialize

        /// </summary>

        /// <typeparam name="T"></typeparam>

        /// <param name="xml"></param>

        /// <returns></returns>

        public static T Deserialize<T>(string xml)

        {

            return Deserialize<T>(xml, typeof(T));

        }

        /// <summary>

        ///     XML Deserialize

        /// </summary>

        /// <typeparam name="T"></typeparam>

        /// <param name="xml"></param>

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

        /// <returns></returns>

        public static T Deserialize<T>(string xml, Type type)

        {

            return Deserialize<T>(xml, type, null);

        }

        /// <summary>

        ///     XML Deserialize

        /// </summary>

        /// <typeparam name="T"></typeparam>

        /// <param name="xml"></param>

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

        /// <param name="types"></param>

        /// <returns></returns>

        public static T Deserialize<T>(string xml, Type type, params Type[] types)

        {

            var serializer = new XmlSerializer(type, types);

            using (TextReader reader = new StringReader(xml))

            {

                var obj = (T)serializer.Deserialize(reader);

                return obj;

            }

        }

        #endregion 序列化

    }

    public class EncodingStringWriter : StringWriter

    {

        public EncodingStringWriter(StringBuilder stringBuilder, Encoding encoding = null) : base(stringBuilder)

        {

            Encoding = encoding ?? Encoding.UTF8;

        }

        public override Encoding Encoding { get; }

    }