using System;

using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.Serialization.Formatters;

using System.IO;

using System.Data;

using System.ComponentModel.DataAnnotations;

using System.Globalization;

using System.Xml;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

    // https://stackoverflow.com/questions/48786123/xmlnodeconverter-can-only-convert-json-that-begins-with-an-object

    static class TestClass

    {

        public static void Test()

        {

            Console.WriteLine("\nTesting simple JSON conversion: ");

​

            var simpleJson = @"{'root' : { 'person' : [{'name':'Alan'},{'name':'Louis'}]}}";

​

            Console.WriteLine(JToken.Parse(simpleJson));

​

            Console.WriteLine(JsonConvert.DeserializeXmlNode(simpleJson).GetOuterXml());

​

            Console.WriteLine("\nTesting result of JsonExtensions.DeserializeXmlNode(): ");

​

            var data = GetJson();

​

            var doc = JsonExtensions.DeserializeXmlNode(data, "root", "array");

​

            Console.WriteLine(doc.GetOuterXml());

        }

​

        static string GetJson()

        {

            var json = @"[{""LearningActivityKey"":2122,""ModuleName"":""certName"",""ModuleVersion"":0.0,""ModuleDescription"":null,""BadgeName"":null,""BadgeVersion"":null,""BadgeDescription"":null,""MozillaBadge"":null,""LearningActivityName"":null,""LearningActivityDescription"":null,""StepName"":null,""StepVersion"":null,""StepDescription"":null,""IsActive"":false,""IsPublished"":false,""CreatedDate"":""0001-01-01T00:00:00"",""ModifiedDate"":null},{""LearningActivityKey"":2122,""ModuleName"":""certName"",""ModuleVersion"":0.0,""ModuleDescription"":null,""BadgeName"":null,""BadgeVersion"":null,""BadgeDescription"":null,""MozillaBadge"":null,""LearningActivityName"":null,""LearningActivityDescription"":null,""StepName"":null,""StepVersion"":null,""StepDescription"":null,""IsActive"":false,""IsPublished"":false,""CreatedDate"":""0001-01-01T00:00:00"",""ModifiedDate"":null}]";

            return json;

        }

    }

​

    public static partial class JsonExtensions

    {

        public static XmlDocument DeserializeXmlNode(string json, string rootName, string rootNodeName)

        {

            return DeserializeXmlNode(new StringReader(json), rootName, rootNodeName);

        }

​

        public static XmlDocument DeserializeXmlNode(TextReader textReader, string rootName, string rootNodeName)

        {

            var prefix = "{" + JsonConvert.SerializeObject(rootNodeName) + ":";

            var postfix = "}";

​

            using (var combinedReader = new StringReader(prefix).Concat(textReader).Concat(new StringReader(postfix)))

            {

                var settings = new JsonSerializerSettings

                {

                    Converters = { new Newtonsoft.Json.Converters.XmlNodeConverter() { DeserializeRootElementName = rootName} },

                    DateParseHandling = DateParseHandling.None,

                };

                using (var jsonReader = new JsonTextReader(combinedReader) { CloseInput = false, DateParseHandling = DateParseHandling.None })

                {

                    return JsonSerializer.CreateDefault(settings).Deserialize<XmlDocument>(jsonReader);

                }

            }

        }

    }

​

    // Taken from 

    // https://stackoverflow.com/questions/2925652/how-to-string-multiple-textreaders-together/2925722#2925722

​

    public static class Extensions

    {

        public static TextReader Concat(this TextReader first, TextReader second)

        {

            return new ChainedTextReader(first, second);

        }

​

        private class ChainedTextReader : TextReader

        {

            private TextReader first;

            private TextReader second;

            private bool readFirst = true;

​

            public ChainedTextReader(TextReader first, TextReader second)

            {

                this.first = first;

                this.second = second;

            }

​

            public override int Peek()

            {

                if (readFirst)

                {

                    return first.Peek();

                }

                else

                {

                    return second.Peek();

                }

            }

​

            public override int Read()

            {

                if (readFirst)

                {

                    int value = first.Read();

                    if (value == -1)

                    {

                        readFirst = false;

                    }

                    else

                    {

                        return value;

                    }

                }

                return second.Read();

            }

​

            public override void Close()

            {

                first.Close();

                second.Close();

            }

​

            protected override void Dispose(bool disposing)

            {

                base.Dispose(disposing);

                if (disposing)

                {

                    first.Dispose();

                    second.Dispose();

                }

            }

        }

    }

​

    public class Program

    {

        public static void Main()

        {

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

            Console.WriteLine("Json.NET version: " + typeof(JsonSerializer).Assembly.FullName);

            Console.WriteLine();

​

            try

            {

                TestClass.Test();

            }

            catch (Exception ex)

            {

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

                Console.WriteLine(ex);

                throw;

            }

        }

    }

​

    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 static class XmlSerializationHelper

    {

        public static string GetOuterXml(this XmlNode node, bool indent = true)

        {

            if (node == null)

                return null;

            using (var textWriter = new StringWriter())

            {

                var settings = new XmlWriterSettings

                {

                    Indent = indent,

                    OmitXmlDeclaration = true,

                };

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

                {

                    node.WriteTo(xmlWriter);

                }

                return textWriter.ToString();

            }

        }

    }

​