using System;

using System.Linq;

using System.Text.Json;

using Newtonsoft.Json;

using Newtonsoft.Json.Linq;

using Newtonsoft.Json.Serialization;

using System.Dynamic;

using JsonSerializer = Newtonsoft.Json.JsonSerializer;

using System.Xml.Linq;                  

public class Program

{

    public static void Main()

    {

            string myJsonInput = @"{ 'FirstLevel': {'SecondLevel': {'ThirdLevel': 'ThirdLEvelValue'} },

                                  'Stores': [ 'Lambton Quay', 'Willis Street' ],

                                  'Manufacturers': [ { 'Name': 'Acme Co', 'Products': [ { 'Name': 'Anvil', 'Price': 50 } ] }, { 'Name': 'Contoso', 'Products': [ { 'Name': 'Elbow Grease', 'Price': 99.95 }, { 'Name': 'Headlight Fluid', 'Price': 4 } ] } ] }";

​

​

            Console.WriteLine("===========Json Input===============\n");

            Console.WriteLine(myJsonInput + "\n");

            Console.WriteLine("====================================\n");

​

​

            //Solution 1:

            JsonSerializer _camelCaseSerializer = JsonSerializer.Create(

              new JsonSerializerSettings

              {

                  ContractResolver = new CamelCasePropertyNamesContractResolver()

              });

​

            var solution1Des = JsonConvert.DeserializeObject<ExpandoObject>(myJsonInput);

            JObject solution1Jobject = JObject.FromObject(solution1Des, _camelCaseSerializer);

            JToken solution1JToken = solution1Jobject.SelectToken("$.manufacturers[?(@.name == 'Acme Co')]");

​

            Console.WriteLine("=============solution1=======================\n");

            Console.WriteLine("json result");

            Console.WriteLine(solution1Jobject + "\n");

            Console.WriteLine("query result");

            Console.WriteLine(solution1JToken + "\n");

            Console.WriteLine("====================================\n");

​

​

            //Solution 2:

            var jsonSerializerSettings = new JsonSerializerSettings

            {

                ContractResolver = new CamelCasePropertyNamesContractResolver()

            };

​

            dynamic solution2Des = JsonConvert.DeserializeObject<ExpandoObject>(myJsonInput);

            if (solution2Des.GetType().GetProperty(nameof(solution2Des.name)) != null)

            {

                Console.Write(solution2Des.name);

            }

            string solution2Result = JsonConvert.SerializeObject(solution2Des);

            JObject solution2Jobject = JObject.Parse(solution2Result);

            JToken solution2JToken = solution2Jobject.SelectToken("$.manufacturers[?(@.name == 'Acme Co')]");

​

            Console.WriteLine("=============solution2=======================\n");

            Console.WriteLine("json result");

            Console.WriteLine(solution1Jobject + "\n");

            Console.WriteLine("query result" + "\n");

            Console.WriteLine(solution1JToken);

            Console.WriteLine("====================================\n");

​

​

            //Solution 3:

            var solution3Des = JsonConvert.DeserializeObject<dynamic>(myJsonInput);

            JObject solution3Result = JObject.FromObject(solution3Des.ToObject<ExpandoObject>(), _camelCaseSerializer);

            JToken solution3JToken = solution3Result.SelectToken("$.manufacturers[?(@.name == 'Acme Co')]");

​

​

            Console.WriteLine("=============solution3=======================\n");

            Console.WriteLine("json result");

            Console.WriteLine(solution3Result + "\n");

            Console.WriteLine("query result");

            Console.WriteLine(solution3JToken + "\n");

            Console.WriteLine("====================================");

​

    }

}