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/50447768/json-result-displayed-wrong-value-when-shown

​

    public class RootObject

    {

        public int id { get; set; }

        public string name { get; set; }

        public long no { get; set; }

    }

​

    class TestClass

    {

        public static void Test()

        {

            var json = GetJson();

            var root = JToken.Parse(json);

            Console.WriteLine(root);

            Console.WriteLine("no: {0}.", root.SelectTokens("[*].no").First());

            var array = JsonConvert.DeserializeObject<List<RootObject>>(json);

            Console.WriteLine("Deserialized no: {0}.", array[0].no);

            Assert.IsTrue(array[0].no.ToString() == root.SelectTokens("[*].no").First().ToString());

        }

        static string GetJson()

        {

            var json = @"[{

""id"": 1,

""name"": ""TEST 1"",

""no"": 35797506102858582

}]";

            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");

        }

    }

​