Example program of downloading a web page async in C#.

using System;
using System.IO;
using System.Net;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace IOBasedTasks
{
    class Program
    {
        static void Main(string[] args)
        {
            Task<string> downloadTask = DownloadWebPageAsync("https://jonlabelle.com");

            Console.Write("Downloading");
            while (!downloadTask.IsCompleted)
            {
                Console.Write(".");
                Thread.Sleep(100);
            }

            Console.WriteLine();
            Console.WriteLine(downloadTask.Result);
        }

        private static async Task<string> DownloadWebPageAsync(string url)
        {
            WebRequest request = WebRequest.Create(url);
            WebResponse response = await request.GetResponseAsync();

            using (var reader = new StreamReader(response.GetResponseStream()))
            {
                string result = await reader.ReadToEndAsync();
                return result;
            }
        }
    }
}