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.Reflection;

​

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

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

​

//https://stackoverflow.com/questions/52743860/c-sharp-deserialize-unlabelled-json-array

​

    public class Parsed_JSON {

        public string label1 { get; set; }

        public ICollection<Full_Result> label2 { get; set; }

        public string label3 { get; set; }

        public string label4 { get; set; }

    }

​

    [JsonConverter(typeof(ObjectToArrayConverter<Full_Result>))]

    public class Full_Result 

    {

        [JsonProperty(Order = 1)]

        public IList<string> values { get; set; }

        [JsonProperty(Order = 2)]

        public float score { get; set; }

    }

​

    // Taken from this answer:

    // https://stackoverflow.com/a/39462464/3744182

    // to https://stackoverflow.com/questions/39461518/c-sharp-json-net-deserialize-response-that-uses-an-unusual-data-structure

​

    public class ObjectToArrayConverter<T> : JsonConverter

    {

        public override bool CanConvert(Type objectType)

        {

            return typeof(T) == objectType;

        }

​

        static bool ShouldSkip(JsonProperty property)

        {

            return property.Ignored || !property.Readable || !property.Writable;

        }

​

        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)

        {

            var type = value.GetType();

            var contract = serializer.ContractResolver.ResolveContract(type) as JsonObjectContract;

            if (contract == null)

                throw new JsonSerializationException("invalid type " + type.FullName);

            var list = contract.Properties.Where(p => !ShouldSkip(p)).Select(p => p.ValueProvider.GetValue(value));

            serializer.Serialize(writer, list);

        }

​

        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)

        {

            if (reader.TokenType == JsonToken.Null)

                return null;

            var token = JArray.Load(reader);

            var contract = serializer.ContractResolver.ResolveContract(objectType) as JsonObjectContract;

            if (contract == null)

                throw new JsonSerializationException("invalid type " + objectType.FullName);

            var value = existingValue ?? contract.DefaultCreator();

            foreach (var pair in contract.Properties.Where(p => !ShouldSkip(p)).Zip(token, (p, v) => new { Value = v, Property = p }))

            {

                var propertyValue = pair.Value.ToObject(pair.Property.PropertyType, serializer);

                pair.Property.ValueProvider.SetValue(value, propertyValue);

            }

            return value;

        }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var JSON = GetJson();

            Parsed_JSON result = JsonConvert.DeserializeObject<Parsed_JSON>(JSON);

            var newJson = JsonConvert.SerializeObject(result, Formatting.Indented);

            Console.WriteLine("Deserialized and re-serialized {0}: ", result);

            Console.WriteLine(newJson);

        }

        static string GetJson()

        {

            var json = @"{  

    ""label1"": ""value1"",  

    ""label2"": [  

        [  

            [  

                ""concept_id_1"",  

                ""concept_1""  

            ],  

            1

        ],  

        [  

            [  

                ""concept_id_2"",  

                ""concept_2""  

            ],  

            2

        ],  

    ],  

    ""label3"": ""value3"",  

    ""label4"": ""value4""  

}  ";

            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;

            }

        }

    }

​