using System;

using System.Collections.Generic;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var schemaJson = @"{

          'bar': {'one':'1', 'two':'2'}

        }";

        Test test = JsonConvert.DeserializeObject<Test>(

            schemaJson,

            new JsonSerializerSettings() {

                //ObjectCreationHandling = ObjectCreationHandling.Replace,

                DefaultValueHandling = DefaultValueHandling.Populate,

                NullValueHandling = NullValueHandling.Ignore

            });

        Console.WriteLine("bar: " + test.bar);

        Console.WriteLine("foo: " + test.foo);

        Console.WriteLine("q: is foo = null? a: " + test.foo == null);

    }

}

public struct Test

{

    public Dictionary<string, string> bar;

    public Dictionary<string, string> foo;

}