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/57964246/how-do-i-use-the-generated-jsonproperty-name-name-from-json-file-to-access-a-s

​

    public partial class MagicTime

    {

        [JsonProperty("Accel Delay")]

        public long AccelDelay { get; set; }

​

        [JsonProperty("Accel Period")]

        public long AccelPeriod { get; set; }

​

        [JsonProperty("Alt DT Step")]

        public long AltDtStep { get; set; }

​

        [JsonProperty("Beep On Command")]

        public bool BeepOnCommand { get; set; }

​

        [JsonProperty("Bunt Step")]

        public long BuntStep { get; set; }

    }

​

    public static partial class JsonExtensions

    {

        static readonly IContractResolver defaultResolver = new JsonSerializer().ContractResolver;

        public static T GetJsonPropertyValue<T>(object obj, string propertyName, IContractResolver resolver = null)

        {

            resolver = resolver ?? defaultResolver;

            var contract = resolver.ResolveContract(obj.GetType());

            if (contract is JsonObjectContract objectContract)

            {

                var property = objectContract.Properties.GetClosestMatchProperty(propertyName);

                if (property == null)

                    throw new JsonException(string.Format("Unknown property {0}", propertyName));

                return (T)property.ValueProvider.GetValue(obj);

            }

            throw new JsonException(string.Format("Invalid contract {0}", contract));

        }

    }

​

    class TestClass

    {

        public static void Test()

        {

            Test1();

            Test2();

            Test3();

        }

        public static void Test1()

        {

            var MT = new MagicTime { AccelDelay = 21 };

​

            var accelDelay = JsonExtensions.GetJsonPropertyValue<long>(MT, "Accel Delay");

            Console.WriteLine("accelDelay = {0}", accelDelay);

            Assert.IsTrue(accelDelay == MT.AccelDelay);

        }   

        public static void Test2()

        {

            var MT = new MagicTime { AccelDelay = 21 };

​

            var accelDelay = JsonExtensions.GetJsonPropertyValue<object>(MT, "Accel Delay");

            Console.WriteLine("accelDelay = {0}", accelDelay);

            Assert.IsTrue(MT.AccelDelay.Equals(accelDelay));

        }   

        public static void Test3()

        {

            var MT = new MagicTime { AccelDelay = 21 };

​

            var resolver = new CamelCasePropertyNamesContractResolver();

            var accelDelay = JsonExtensions.GetJsonPropertyValue<object>(MT, "Accel Delay", resolver);

            Console.WriteLine("accelDelay = {0}", accelDelay);

            Assert.IsTrue(MT.AccelDelay.Equals(accelDelay));

        }   

    }

​

    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;

        }

    }

​