using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Xml.Serialization;

using System.Xml;

using System.IO;

// https://stackoverflow.com/questions/44652753/xmlserialization-with-xmlanyelement-to-xmlnode-and-order-property

​

    [XmlRoot]

    [Serializable]

    public class A

    {

        [XmlElement("asd", Order = 1)]

        public string asd { get; set; }

​

        [XmlIgnore]

        public string[] qwe { get; set; }

​

        [XmlElement("nnn", Order = 2)]

        public XmlNodeWrapper [] nnn

        {

            get

            {

                if (qwe == null)

                    return null;

​

                var xml = new XmlDocument();

                var nodes = new List<XmlNode>(qwe.Length);

​

                foreach (var q in qwe)

                {

                    var nnnTag = xml.CreateNode(XmlNodeType.Element, "nnn", null);

                    nnnTag.InnerText = q;

                    nodes.Add(nnnTag);

                }

​

                return nodes.Select(n => (XmlNodeWrapper)n.ChildNodes).ToArray();

            }

            set

            {

                if (value == null)

                    return;

                qwe = value.Select(tag => tag.InnerText()).ToArray();

            }

        }

​

        [XmlElement("aaa", Order = 3)]

        public string aaa { get; set; }

    }

​

    [XmlType(AnonymousType = true)]

    public struct XmlNodeWrapper

    {

        public static implicit operator XmlNodeWrapper(XmlNodeList nodes)

        {

            return new XmlNodeWrapper { Nodes = nodes == null ? null : nodes.Cast<XmlNode>().ToArray() };

        }

​

        public static implicit operator XmlNode[](XmlNodeWrapper wrapper)

        {

            return wrapper.Nodes;

        }

​

        // Marking the Nodes property with both [XmlAnyElement] and [XmlText] indicates that the node array

        // may contain mixed content (I.e. both XmlElement and XmlText objects).

        // Hat tip: https://stackoverflow.com/questions/25995609/xmlserializer-node-containing-text-xml-text 

        [XmlAnyElement]

        [XmlText]

        public XmlNode[] Nodes { get; set; }

​

        public string InnerText()

        {

            if (Nodes == null)

                return null;

            return String.Concat(Nodes.Select(n => n.InnerText));

        }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var a = new A

            {

                aaa = "aaa",

                asd = "asd",

                qwe = new[] { "q", "w", "e" }

            };

            var s = Serialize(a);

            Console.WriteLine(s);

​

            var ss = Deserialize<A>(s);

            var s2 = Serialize(ss);

​

            Console.WriteLine(s2);

​

            Console.WriteLine(string.Format("Equals: {0};", s == s2));

​

            Assert.IsTrue(s == s2);

​

            Console.WriteLine();

        }

​

        public static string Serialize<T>(T a)

        {

            var s = new XmlSerializer(typeof(T));

            using (var ms = new MemoryStream())

            {

                using (TextWriter sw = new StreamWriter(ms))

                {

                    s.Serialize(sw, a);

                    ms.Seek(0, 0);

                    using (var sr = new StreamReader(ms))

                    {

                        return sr.ReadToEnd();

                    }

                }

            }

        }

​

        public static T Deserialize<T>(string a)

        {

            var s = new XmlSerializer(typeof(T));

            var bytes = Encoding.ASCII.GetBytes(a);

            using (var ms = new MemoryStream(bytes))

            {

                return (T)s.Deserialize(ms);

            }

        }

    }

​

    public class AssertionFailedException : System.Exception

    {

        public AssertionFailedException() : base() { }

​

        public AssertionFailedException(string s) : base(s) { }

    }

​

    public static class Assert

    {

        public static void IsTrue(bool value)

        {

            IsTrue(value, "Assertion failed");

        }

​

        public static void IsTrue(bool value, string message)

        {

            if (value == false)

                throw new AssertionFailedException(message);

        }

    }

    public class Program

    {

        public static void Main()

        {

            TestClass.Test();

        }

    }