using System;

using System.Collections.Generic;

using System.Text;

using System.Linq;

using System.Xml.Serialization;

using System.Xml;

using System.Xml.Linq;

using System.Xml.Schema;

using System.IO;

using System.Data;

using System.Runtime.Serialization;

using System.Runtime.Serialization.Formatters.Binary;

using System.IO.Compression;

​

    //https://stackoverflow.com/questions/50304153/xmlserializer-to-c-sharp-object-store-original-xml-element#comment87633181_50304153

​

​

    [XmlRoot(ElementName = ElementName)]

    public class Data : IXmlSerializable

    {

        public const string ElementName = "data";

​

        XElement element = new XElement((XName)ElementName);

​

        public string Someattributea

        {

            get { return (string)element.Attribute("someattributea"); }

            set { element.SetAttribute("someattributea", value); }

        }

​

        public string Someattributeb

        {

            get { return (string)element.Attribute("someattributeb"); }

            set { element.SetAttribute("someattributeb", value); }

        }

​

        public string Someattributec

        {

            get { return (string)element.Attribute("someattributec"); }

            set { element.SetAttribute("someattributec", value); }

        }

​

        public string SourceXML

        {

            get

            {

                return element.ToString();

            }

            set

            {

                if (value == null)

                    throw new ArgumentNullException();

                element = XElement.Parse(value);

            }

        }

​

        #region IXmlSerializable Members

​

        public XmlSchema GetSchema() { return null; }

​

        public void ReadXml(XmlReader reader)

        {

            reader.MoveToContent();

            element = (XElement)XNode.ReadFrom(reader);

        }

​

        public void WriteXml(XmlWriter writer)

        {

            foreach (var attr in element.Attributes())

                writer.WriteAttributeString(attr.Name.LocalName, attr.Name.NamespaceName, attr.Value);

            foreach (var child in element.Elements())

                child.WriteTo(writer);

        }

​

        #endregion

    }

​

    public static class XElementExtensions

    {

        public static void SetAttribute(this XElement element, XName attributeName, string value)

        {

            var attr = element.Attribute(attributeName);

            if (value == null)

            {

                if (attr != null)

                    attr.Remove();

            }

            else

            {

                if (attr == null)

                    element.Add(new XAttribute(attributeName, value));

                else

                    attr.Value = value;

            }

        }

    }

​

    [XmlRoot("DataList")]

    public class DataList

    {

        [XmlElement("DataItem", Namespace = "https://Test Namespace")]

        public List<Data> Data { get; set; }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var xml = GetXml();

​

            var data = xml.LoadFromXml<Data>();

​

            var xml2 = data.GetXml();

​

            Console.WriteLine(xml2);

​

            var data2 = xml2.LoadFromXml<Data>();

​

            Assert.IsTrue(data.Someattributea == data2.Someattributea && data.Someattributeb == data2.Someattributeb && data.Someattributec == data2.Someattributec);

            data2.Someattributea = "replacement value for Someattributea";

            data2.Someattributeb = null;

​

            var xml3 = data2.GetXml();

​

            Console.WriteLine(xml3);

​

            var data3 = xml3.LoadFromXml<Data>();

​

            Assert.IsTrue(data3.Someattributea == data2.Someattributea && data3.Someattributeb == data2.Someattributeb && data3.Someattributec == data2.Someattributec);

​

            Assert.IsTrue(XElement.Parse(xml3).Attributes().Select(a => a.Value).SequenceEqual(XElement.Parse(data3.GetXml()).Attributes().Select(a => a.Value)));

​

            TestDatalist(data);

        }

​

        static void TestDatalist(Data data)

        {

            Console.WriteLine("\nTesting a list of {0}.", data);

​

            var dataList = new DataList

            {

                Data = new List<Data>

                {

                    data.GetXml().LoadFromXml<Data>(),

                    data.GetXml().LoadFromXml<Data>(),

                },

            };

​

​

            var xml = dataList.GetXml();

​

            Console.WriteLine(xml);

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            var dataList2 = xml.LoadFromXml<DataList>();

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            var xml2 = dataList2.GetXml();

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            Console.WriteLine(xml2);

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            Assert.IsTrue(dataList.Data.Count == dataList2.Data.Count);

        }

​

        static string GetXml()

        {

            var xml = @"<data someattributea="""" someattributeb="""" someattributec="""" ExtraAttr="""" xmlns:p1=""http://SomeTestNamespace.com"" p1:someattributec=""namespace attr"" />";

            return xml;

        }

    }

​

    public static class XmlSerializationHelper

    {

        public static T LoadFromXml<T>(this string xmlString, XmlSerializer serial = null)

        {

            serial = serial ?? new XmlSerializer(typeof(T));

            using (var reader = new StringReader(xmlString))

            {

                return (T)serial.Deserialize(reader);

            }

        }

​

        public static string GetXml<T>(this T obj, bool omitStandardNamespaces)

        {

            return obj.GetXml(null, omitStandardNamespaces);

        }

        public static string GetXml<T>(this T obj, XmlSerializer serializer = null, bool omitStandardNamespaces = false)

        {

            XmlSerializerNamespaces ns = null;

            if (omitStandardNamespaces)

            {

                ns = new XmlSerializerNamespaces();

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

            }           

            using (var textWriter = new StringWriter())

            {

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

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

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

                return textWriter.ToString();

            }

        }

    }

    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, "failed");

        }

​

        public static void IsTrue(bool value, string message)

        {

            if (value == false)

                throw new AssertionFailedException(message ?? "failed");

        }

    }

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Roslyn 2.0 Compiler; Environment version: " + Environment.Version);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Uncaught exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​