gistfile1.cs

namespace ConsoleApplication4
{
    class Program
    {   
        static void Main(string[] args)
        {
            var downloads = new List<Task>();

            while (downloads.Count < 10)
            {
                downloads.Add(DownloadPageAsync("http://bing.com"));
            }

            Console.WriteLine("Requests queued!");

            Task.WaitAll(downloads.ToArray());

            Console.WriteLine("Done!");
            Console.ReadKey();
        }

        private async static Task DownloadPageAsync(string url)
        {
            using (WebClient client = new WebClient())
            {
                var page = await client.DownloadStringTaskAsync(url);
                Console.WriteLine(page.Substring(0, 25));
            }
        }
    }
}