using System;

using Newtonsoft.Json;

using System.Collections.Generic;

​

public class Program

{

    static string json = "{\"italy\":[{\"city\":\"rome\",\"people\":100000},{\"city\":\"milan\",\"people\":50000}],\"spain\":[{\"city\":\"barcelona\",\"people\":100000},{\"city\":\"madrid\",\"people\":2000}]}";

​

    public static void Main()

    {

        List<CityPeople> cityPeople = new List<CityPeople>();

        foreach(var f in JsonConvert.DeserializeObject<Dictionary<string, CityInfo[]>>(json))

        {

            foreach(var i in f.Value)

            {

                cityPeople.Add(new CityPeople() {

                    City = i.City,

                    Country = f.Key,

                    People = i.People

                });

            }

        }

        foreach(var c in cityPeople)

        {

            Console.WriteLine("{0}", c.Country);

            Console.WriteLine("-{0}", c.City);

            Console.WriteLine("-{0}", c.People);

        }

    }

    public class CityInfo

    {

        public string City { get; set; }

        public int People { get; set; }

    }

    public class CityPeople

    {

        public string City { get; set; }

        public string Country { get; set; }

        public int People { get; set; }

    }

}