using System;

using System.Collections.Generic;

using Newtonsoft.Json;

using System.Linq;

public class Program

{

    public static void Main()

    {

        const string json = @"

            {

               'name':'Child1',

               'child':{

                    'item1':{

                        'id':'carId1',

                        'type':'carType1'

                     },

                    'item2':{

                        'id':'carId2',

                        'type':'carType2'

                     }                   

               }

            }";

        var test = JsonConvert.DeserializeObject<Parent>(json);     

        Console.WriteLine(test.name);

        foreach (var item in test.child) {

            Console.WriteLine("* '" + item.Key + "': " + item.Value.id + "-" + item.Value.type);

        }

    }

    public class Parent

    {

        public string name { get; set; }

        public Dictionary<string, item> child{ get; set; }

    }

​

    public class item

    {

        public string id { get; set; }

        public string type { get; set; }

    }   

}