using System;

using System.Linq;

using System.Collections.Generic;

using System.Threading.Tasks;

using System.Net.Http;

using Newtonsoft.Json;

public class Program

{

    // Task:

    // Use webservice https://restcountries.eu to retrieve the list of top 10 most populated countries in Europe and display them in the format:

    // 1. Afghanistan (Kabul)

    // 2. Åland Islands (Mariehamn)

    public static async Task Main()

    {

        var countries = await new CountryDownloader().GetCountriesAsync("europe");

        Console.WriteLine($"I downloaded {countries.Count()} countries.");

    }

}

​

public class CountryDownloader

{

    public async Task<IEnumerable<CountryInfo>> GetCountriesAsync(string region)

    {

        using (var client = new HttpClient())

        {

            var result = await client.GetStringAsync($"https://restcountries.eu/rest/v2/region/{region}");

            return JsonConvert.DeserializeObject<IEnumerable<CountryInfo>>(result);

        }       

    }

}

​

public class CountryInfo

{

    public string Name { get; set; }

    public string Capital { get; set; }

}