using System;

using System.IO;

using Newtonsoft.Json;

public class Program

{

    public static void Main()

    {

        var address = new Address

                {

                    Street = "Fulton Street",

                    Number = 100,

                    City = "New York",

                    ZipCode = "10038",

                    State = "NY",

                    Country = "USA"

                };

​

            var serializer = new JsonSerializer();

            var stringWriter = new StringWriter();

            using (var writer = new JsonTextWriter(stringWriter))

            {

                writer.QuoteName = false;

                serializer.Serialize(writer, address);

            }

            var json = stringWriter.ToString();

​

            Console.WriteLine(json);

    }

}

​

public class Address

{

    public string Street { get; set; }

​

    public uint Number { get; set; }

​

    public string City { get; set; }

​

    public string ZipCode { get; set; }

​

    public string State { get; set; }

​

    public string Country { get; set; }

}