Program.cs

using System;
using System.Linq;
using System.Net.Http;
using System.Threading.Tasks;

namespace ItsBigItsHeavyItsWood
{
    class Program
    {
        static void Main()
        {
            var urlsToDownload = new[]
            { 
                "http://www.google.com/", 
                "http://www.microsoft.com/", 
                "http://www.apple.com/", 
            };

            var tasks = urlsToDownload.Select(DownloadUrl).ToArray();
            Task.WaitAll(tasks);
        }

        private static async Task DownloadUrl(string url) 
        { 
            var client = new HttpClient(); 
            Console.WriteLine("Starting to download url {0}", url); 
            var contents = await client.GetByteArrayAsync(url); 
            Console.WriteLine("Downloaded {0} bytes", contents.Length); 
        }
    }
}