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 Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Converters;

using Newtonsoft.Json.Serialization;    

​

// https://stackoverflow.com/questions/46227607/quering-json-using-selecttokens-with-newtonsoft-json-linq-in-c-sharp

​

    class TestClass

    {

        public static void Test()

        {

            TestSimple();

            TestComplex();

        }

        public static void TestSimple()

        {

            var bodyText = GetJson();

            var jsonText = JObject.Parse(bodyText);

            foreach (var disbursement in jsonText.SelectTokens("disbursements[*]"))

            {

                disbursement["statusCode"] = 166000005;

            }

            Console.WriteLine("\nNew JSON: ");

            Console.WriteLine(jsonText);

        }

        public static void TestComplex()

        {

            var bodyText = GetJson();

            var jsonText = JObject.Parse(bodyText);

            foreach (var disbursement in jsonText.SelectTokens("disbursements[*]"))

            {

                disbursement["statusCode"] = 

                    JToken.FromObject( new { oldValue = disbursement["statusCode"], newValue = 166000005 } );

            }

            Console.WriteLine("\nNew JSON with complex value replacement: ");

            Console.WriteLine(jsonText);

        }

        static string GetJson()

        {

            var json = @"{  

   ""disbursements"":[  

      {  

         ""id"":""1f337641"",

         ""contactId"":""f5eb2"",

         ""statusCode"":166000005,

         ""amount"":8,

         ""category"":166000001

      },

      {  

         ""id"":""027a4762"",

         ""contactId"":""f5eb2038"",

         ""statusCode"":166000000,

         ""amount"":4000,

         ""category"":166000000

      }

   ]

}";

            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");

        }

    }

​