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 Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

// https://stackoverflow.com/questions/50419383/how-to-convert-dynamic-json

​

    class TestClass

    {

        public static void Test()

        {

            var inputJson = GetJson();

            // Deserialize the input JSON as an array of arrays of JSON objects

            var inputArray = JsonConvert.DeserializeObject<KeyValuePair<string, JToken> [][]>(inputJson);

            // Convert each inner array to a JSON object whose property names come from the nested objects' Key values and property values come from the nested objects' Value values:

            var outputArray = inputArray.Select(a => new JObject(a.Select(o => (new JProperty(o.Key, o.Value)))));

            // And re-serialize to JSON.

            var outputJson = JsonConvert.SerializeObject(outputArray, Formatting.Indented);

            Console.WriteLine(outputJson);

            Assert.IsTrue(JToken.DeepEquals(JToken.Parse(outputJson), JToken.Parse(GetRequiredJson())), "Generated and required JSON are NOT equivalent!");

            Console.WriteLine("Generated and required JSON are equivalent.");

        }

        static string GetJson()

        {

            var json = @"[

[{""Key"":""entity_id"",""Value"":""1""},{""Key"":""CustomerName"",""Value"":""Test1""},{""Key"":""AccountNumber"",""Value"":""ACC17-001""},{""Key"":""CustomerType"",""Value"":""Direct Sale""}],

[{""Key"":""entity_id"",""Value"":""2""},{""Key"":""CustomerName"",""Value"":""Test2""},{""Key"":""AccountNumber"",""Value"":""ACC17-002""},{""Key"":""CustomerType"",""Value"":""Direct Sale""}],

[{""Key"":""entity_id"",""Value"":""3""},{""Key"":""CustomerName"",""Value"":""Test3""},{""Key"":""AccountNumber"",""Value"":""ACC17-003""},{""Key"":""CustomerType"",""Value"":""Direct Sale""}],

[{""Key"":""entity_id"",""Value"":""4""},{""Key"":""CustomerName"",""Value"":""Test4""},{""Key"":""AccountNumber"",""Value"":""ACC17-004""},{""Key"":""CustomerType"",""Value"":""Direct Sale""}],

[{""Key"":""entity_id"",""Value"":""5""},{""Key"":""CustomerName"",""Value"":""Test5""},{""Key"":""AccountNumber"",""Value"":""ACC17-005""},{""Key"":""CustomerType"",""Value"":""Invoice""}],

[{""Key"":""entity_id"",""Value"":""6""},{""Key"":""CustomerName"",""Value"":""Test6""},{""Key"":""AccountNumber"",""Value"":""ACC17-006""},{""Key"":""CustomerType"",""Value"":""Invoice""}]

]";

            return json;

        }

        static string GetRequiredJson()

        {

            var json = @"[

{""entity_id"":""1"",""CustomerName"":""Test1"",""AccountNumber"":""ACC17-001"",""CustomerType"":""Direct Sale""},

{""entity_id"":""2"",""CustomerName"":""Test2"",""AccountNumber"":""ACC17-002"",""CustomerType"":""Direct Sale""},

{""entity_id"":""3"",""CustomerName"":""Test3"",""AccountNumber"":""ACC17-003"",""CustomerType"":""Direct Sale""},

{""entity_id"":""4"",""CustomerName"":""Test4"",""AccountNumber"":""ACC17-004"",""CustomerType"":""Direct Sale""},

{""entity_id"":""5"",""CustomerName"":""Test5"",""AccountNumber"":""ACC17-005"",""CustomerType"":""Invoice""},

{""entity_id"":""6"",""CustomerName"":""Test6"",""AccountNumber"":""ACC17-006"",""CustomerType"":""Invoice""}

]";

            return json;

        }

    }

​

​

    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");

        }

    }

​