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.IO;

using System.Runtime.Serialization;

using System.Reflection;

​

using NUnit.Framework; //NUnit.Framework.AssertionException

​

//https://stackoverflow.com/questions/69499790/net-core-3-1-api-to-accept-complext-xml-object

​

    [DataContract(Name="SMTPSettings", Namespace = "")]

    public class SMTPSettings 

    {

        [DataMember(Name ="Host", Order = 1)]

        public string Host { get; set; }

        [DataMember(Name = "Port", Order = 2)]

        public int Port { get; set; }

        [DataMember(Name = "UserName", Order = 3)]

        public string UserName { get; set; }

        [DataMember(Name = "Password", Order = 4)]

        public string Password { get; set; }

        [DataMember(Name = "UseSSL", Order = 5)]

        public string UseSSL { get; set; }

        [DataMember(Name = "TestEmailAddress", Order = 6)]

        public string TestEmailAddress { get; set; }

    }

​

    public static partial class DataContractSerializerHelper

    {

        public static string ToContractXml<T>(this T obj, DataContractSerializer serializer = null, XmlWriterSettings settings = null)

        {

            serializer = serializer ?? new DataContractSerializer(obj == null ? typeof(T) : obj.GetType());

            using (var textWriter = new StringWriter())

            {

                settings = settings ?? new XmlWriterSettings { Indent = true };

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

                {

                    serializer.WriteObject(xmlWriter, obj);

                }

                return textWriter.ToString();

            }

        }

​

        public static T FromContractXml<T>(string xml, DataContractSerializer serializer = null)

        {

            using (var textReader = new StringReader(xml ?? ""))

            using (var xmlReader = XmlReader.Create(textReader))

            {

                return (T)(serializer ?? new DataContractSerializer(typeof(T))).ReadObject(xmlReader);

            }

        }

    }

​

    public class TestClass

    {

        public static void Test()

        {

            var xml = GetXml();

            var dataContractObject = DataContractSerializerHelper.FromContractXml<SMTPSettings>(xml);

            dataContractObject.Dump();

        }

        static string GetXml() => @"<?xml version=""1.0""?>

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

  <Host>mail.clubcompete.com</Host>

  <Port>26</Port>

  <UserName>outgoing@clubcompete.com</UserName>

  <Password>xxxxxxxxx</Password>

  <UseSSL>false</UseSSL>

  <TestEmailAddress>al@xxxxx-micro.com</TestEmailAddress>

</SMTPSettings>

";

    }

​

    public class Program

    {

        public static void Main()

        {

            Console.WriteLine("Environment version: {0} ({1})", System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription , GetNetCoreVersion());

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

                Console.WriteLine("Failed with unhandled exception: ");

                Console.WriteLine(ex);

                throw;

            }

        }

        public static string GetNetCoreVersion()

        {

            //https://techblog.dorogin.com/how-to-detect-net-core-version-in-runtime-ecd65ad695be

            //

            var assembly = typeof(System.Runtime.GCSettings).GetTypeInfo().Assembly;

            var assemblyPath = assembly.Location.Split(new[] { '/', '\\' }, StringSplitOptions.RemoveEmptyEntries);

            int netCoreAppIndex = Array.IndexOf(assemblyPath, "Microsoft.NETCore.App");

            if (netCoreAppIndex > 0 && netCoreAppIndex < assemblyPath.Length - 2)

                return assemblyPath[netCoreAppIndex + 1];

            return null;

        }

    }

​