using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace ConsoleApp1

{

    public class Program

    {

        public static void Main(string[] args)

        {

            dynamic j = JsonConvert.DeserializeObject<dynamic>(@"

{ 

    a: 1,

    b: [

        [ 2 ],

        { c: 3 }

    ] 

}");

​

            Console.WriteLine("Before");

            var aBefore = j.a.Value.GetType();

            Console.WriteLine(aBefore);

            var bBefore = j.b[0][0].Value.GetType();

            Console.WriteLine(bBefore);

            var cBefore = j.b[1].c.Value.GetType();

            Console.WriteLine(cBefore);

​

            Process(j);

​

            Console.WriteLine("");

            Console.WriteLine("After");

            var aAfter = j.a.Value.GetType();

            Console.WriteLine(aAfter);

            var bAfter = j.b[0][0].Value.GetType();

            Console.WriteLine(bAfter);

            var cAfter = j.b[1].c.Value.GetType();

            Console.WriteLine(cAfter);

        }

​

        private static void Process(JObject o)

        {

            foreach (var kvp in o)

            {

                Process(kvp.Value);

            }

        }

​

        private static void Process(JToken t)

        {

            if (t is JObject)

            {

                var o = (JObject)t;

                Process(o);

            }

​

            if (t is JArray)

            {

                var a = (JArray)t;

                foreach (var i in a)

                {

                    Process(i);

                }

            }

​

            if (t is JValue)

            {

                var v = (JValue)t;

                if (v.Value is long)

                {

                    var l = (long)v.Value;

                    if (int.MinValue <= l && l <= int.MaxValue)

                    {

                        v.Value = (int)l;

                    }

                }

            }

        }

    }

}

​