Закачка файлов с FTP-сервера

using System;
using System.IO;
using System.Net;
 
namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            FTPFileDownloader downloader = new FTPFileDownloader();
            //downloader.SetAutorizationData("admin", "dh8ezk_22");
            downloader.DownloadProgressChanged += Downloader_DownloadProgressChanged;
            downloader.DownloadCompleted += Downloader_DownloadCompleted;
 
            string fileToDownload = "ftp://speedtest.tele2.net/10MB.zip";
            Console.WriteLine("Downloading of file {0}:", Path.GetFileName(fileToDownload));
            downloader.DownloadFile(fileToDownload, Path.GetFileName(fileToDownload));
 
            Console.Read();
        }
 
        private static void Downloader_DownloadCompleted(object sender, EventArgs e)
        {
            Console.Write("Completed!");
        }
 
        private static void Downloader_DownloadProgressChanged(object sender, DownloadProgressChangedArgs e)
        {
            Console.Write(e.Progress + "%" + " ");
        }
    }
 
    class FTPFileDownloader
    {
        public event EventHandler<DownloadProgressChangedArgs> DownloadProgressChanged;
        public event EventHandler DownloadCompleted;
 
        private string login;
        private string password;
 
        public FTPFileDownloader() { }
 
        public void SetAutorizationData(string login, string password)
        {
            this.login = login;
            this.password = password;
        }
        public void DownloadFile(string downloadAddress, string savePath)
        {
            FtpWebRequest request = (FtpWebRequest)WebRequest.Create(downloadAddress);
            request.KeepAlive = true;
            request.UsePassive = true;
            request.UseBinary = true;
            request.Method = WebRequestMethods.Ftp.DownloadFile;
            if (this.login != string.Empty && this.password != string.Empty)
                request.Credentials = new NetworkCredential(this.login, this.password);
 
            using (FtpWebResponse response = (FtpWebResponse)request.GetResponse()) // Error here
            using (Stream responseStream = response.GetResponseStream())
            using (StreamReader reader = new StreamReader(responseStream))
            using (Stream fileStream = File.Create(savePath))
            {
                byte[] downloadBuffer = new byte[10240];
                int readBytes;
                long downloadedBytes = 0;
                long serverFileSize = response.ContentLength;
                int lastPercentValue = 0;
                while ((readBytes = responseStream.Read(downloadBuffer, 0, downloadBuffer.Length)) > 0)
                {
                    fileStream.Write(downloadBuffer, 0, readBytes);
                    downloadedBytes += readBytes;
 
                    if (lastPercentValue != (int)(100 * downloadedBytes / serverFileSize))
                    {
                        lastPercentValue = (int)(100 * downloadedBytes / serverFileSize);
                        DownloadProgressChanged?.Invoke(this, new DownloadProgressChangedArgs(lastPercentValue));
                    }
                }
                fileStream.Flush();
                DownloadCompleted?.Invoke(this, new EventArgs());
            }
        }
    }
 
    class DownloadProgressChangedArgs
    {
        public int Progress;
 
        public DownloadProgressChangedArgs(int Progress)
        {
            this.Progress = Progress;
        }
    }
}