using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Xml.Serialization;

using System.Xml;

using System.IO;

using System.Diagnostics;

using System.Collections.ObjectModel;

using System.Threading;

using System.ComponentModel;

using System.Xml.Linq;

using System.Reflection;

using System.Data;

using System.Xml.Schema;

using System.Text.RegularExpressions;

using System.Net;

using System.Xml.XPath;

using System.Globalization;

using System.ComponentModel.DataAnnotations;

using System.Collections;

using System.Runtime.InteropServices;

using System.Runtime.Serialization;

​

    // https://stackoverflow.com/questions/42953870/xml-changes-after-serialization

​

    public partial class Message

    {

        [XmlNamespaceDeclarations]

        public XmlSerializerNamespaces XmlFileNamespaces { get; set; }

​

        /// <summary>

        /// returns a XmlSerializerNamespaces to use when serializing a Message as the root XML object.

        /// If Message was previously deserialized from XML, the actual namespaces observed will be returned.

        /// Otherwise, a default will be returned that suppresses output of the xmlns:xsi and xmlns:xsd namespace attributes.

        /// </summary>

        [XmlIgnore]

        public XmlSerializerNamespaces XmlRootNamespaces

        {

            get

            {

                if (XmlFileNamespaces != null)

                    return XmlFileNamespaces;

                var xmlNamespaces = new XmlSerializerNamespaces();

                xmlNamespaces.Add("", ""); // Disable the xmlns:xsi and xmlns:xsd lines.

                // xmlNamespaces.Add("ns", "http://example.com"); // Or, if you prefer, add this namespace as well as disabling xmlns:xsi and xmlns:xsd.

                return xmlNamespaces;

            }

        }

    }

​

    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true, Namespace = "http://example.com")]

    [System.Xml.Serialization.XmlRootAttribute(Namespace = "http://example.com", IsNullable = false)]

    public partial class Message

    {

​

        private Header headerField;

​

        /// <remarks/>

        [System.Xml.Serialization.XmlElementAttribute(Namespace = "")]

        public Header Header

        {

            get

            {

                return this.headerField;

            }

            set

            {

                this.headerField = value;

            }

        }

    }

​

    public static class XmlSerializationHelper

    {

        public static T LoadFromXml<T>(this string xmlString)

        {

            using (StringReader reader = new StringReader(xmlString))

            {

                return (T)new XmlSerializer(typeof(T)).Deserialize(reader);

            }

        }

​

        public static string GetXml<T>(this T obj, XmlSerializerNamespaces ns)

        {

            using (var textWriter = new Utf8StringWriter())

            {

                var settings = new XmlWriterSettings() { Indent = true }; // For cosmetic purposes.

                using (var xmlWriter = XmlWriter.Create(textWriter, settings))

                    new XmlSerializer(obj.GetType()).Serialize(xmlWriter, obj, ns);

                return textWriter.ToString();

            }

        }

    }

​

    // http://stackoverflow.com/questions/3862063/serializing-an-object-as-utf-8-xml-in-net

    public class Utf8StringWriter : StringWriter

    {

        public override Encoding Encoding

        {

            get { return Encoding.UTF8; }

        }

    }

​

    class TestClass

    {

        static string GetXml()

        {

            var xml = @"<?xml version=""1.0"" encoding=""UTF-8""?>

<ns:Message xmlns:ns=""http://example.com"">

  <Header version=""1.0"">

    <Sender>3015207400109</Sender>

    <Receiver>8711200999903</Receiver>

    <MessageID>000D2613F64AC021ED783C084735EC78E53</MessageID>

    <CreationDateTime>2017-03-21T08:00:47Z</CreationDateTime>

  </Header>

</ns:Message>";

            return xml;

        }

​

        public static void Test()

        {

            var xml = GetXml();

​

            Console.WriteLine("\nInitial XML: ");

            Console.WriteLine(xml);

​

            var message = xml.LoadFromXml<Message>();

​

            var reserializedXml = message.GetXml(message.XmlRootNamespaces);

​

            Console.WriteLine("\nDeserialized and re-serialized XML: ");

            Console.WriteLine(reserializedXml);

​

            var message2 = new Message { Header = message.Header };

​

            var freshXml = message2.GetXml(message2.XmlRootNamespaces);

​

            Console.WriteLine("\nSerialized XML from a newly allocated Message instance: ");

            Console.WriteLine(freshXml);

        }

    }

​

    /// <remarks/>

    [System.Xml.Serialization.XmlTypeAttribute(AnonymousType = true)]

    [System.Xml.Serialization.XmlRootAttribute(Namespace = "", IsNullable = false)]

    public partial class Header

    {

        private ulong senderField;

​

        private ulong receiverField;

​

        private string messageIDField;

​

        private System.DateTime creationDateTimeField;

​

        private decimal versionField;

​

        /// <remarks/>

        public ulong Sender

        {

            get

            {

                return this.senderField;

            }

            set

            {

                this.senderField = value;

            }

        }

​

        /// <remarks/>

        public ulong Receiver

        {

            get

            {

                return this.receiverField;

            }

            set

            {

                this.receiverField = value;

            }

        }

​

        /// <remarks/>

        public string MessageID

        {

            get

            {

                return this.messageIDField;

            }

            set

            {

                this.messageIDField = value;

            }

        }

​

        /// <remarks/>

        public System.DateTime CreationDateTime

        {

            get

            {

                return this.creationDateTimeField;

            }

            set

            {

                this.creationDateTimeField = value;

            }

        }

​

        /// <remarks/>

        [System.Xml.Serialization.XmlAttributeAttribute()]

        public decimal version

        {

            get

            {

                return this.versionField;

            }

            set

            {

                this.versionField = value;

            }

        }

    }

​

    public class Program

    {

        public static void Main()

        {

            TestClass.Test();

        }

    }