dictionary reflection get value for key

gistfile1.txt

namespace ConsoleApplication4
{
    using System;
    using System.Collections.Generic;
    using ConsoleApplication4.Reflection;
    using Newtonsoft.Json;

    class Program
    {
        static void Main(string[] args)
        {
            var obj = new { name = "Prabir" };
            var jsonString = JsonConvert.SerializeObject(obj);
            var json = JsonConvert.DeserializeObject(jsonString);

            foreach (Type iType in json.GetType().GetInterfaces())
            {
                if (iType.IsGenericType && iType.GetGenericTypeDefinition()
                    == typeof(IDictionary<,>))
                {
                    Type[] types = ReflectionUtils.GetGenericTypeArguments(iType);
                    Type keyType = types[0];
                    Type valueType = types[1];

                    Type genericType = typeof(Dictionary<,>).MakeGenericType(keyType, valueType);

                    var value = typeof(Program).GetMethod("GetDictionaryValue")
                                                .MakeGenericMethod(iType.GetGenericArguments())
                                                .Invoke(null, new object[] { json, "name" });
                    var str = value.ToString();
                    Console.WriteLine(str);
                    break;
                }
            }

            Console.ReadKey();
        }

        public static object GetDictionaryValue<TKey, TValue>(IDictionary<TKey, TValue> dict, TKey key)
        {
            return dict[key];
        }

    }
}