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 System.Collections.ObjectModel;

​

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/59729499/exception-deserialize-json

​

    public class WordAPI

    {

        [JsonProperty("word")]

        public string Word { get; set; }

        [JsonProperty("results")]

        public List<Result> Results { get; set; }

    }

​

    public class Result // FIXED, was Results

    {

        [JsonProperty("definition")]

        public string Definition { get; set; }

​

        [JsonProperty("partOfSpeech")]

        public string PartOfSpeech { get; set; }

​

        [JsonProperty("typeOf")]

        public List<string> TypeOf { get; set; }

​

        [JsonProperty("derivation")]

        public List<string> Derivation { get; set; }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var response = new

            {

                Content = GetJson(),

            };

            var word = Newtonsoft.Json.JsonConvert.DeserializeObject<WordAPI>(response.Content);

​

            Console.WriteLine("Re-serialized {0}:", word);

            Console.WriteLine(JsonConvert.SerializeObject(word, Formatting.Indented));

        }   

        static string GetJson()

        {

            var json = @"{  

   ""word"":""ventriloquist"",

   ""frequency"":3.39,

   ""results"":[  

      {  

         ""definition"":""a performer who projects the voice into a wooden dummy"",

         ""partOfSpeech"":""noun"",

         ""typeOf"":[  

            ""performer"",

            ""performing artist""

         ],

         ""derivation"":[  

            ""ventriloquism"",

            ""ventriloquy""

         ]

      }

   ],

   ""syllables"":{  

      ""count"":4,

      ""list"":[  

         ""ven"",

         ""tril"",

         ""o"",

         ""quist""

      ]

   },

   ""pronunciation"":{  

      ""all"":""vɛn'trɪləkwɪst""

   }

}

";

            return json;

        }

    }

​

    public class Program

    {

        public static void Main()

        {

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

            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 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.CodeBase.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;

        }

    }

​