http://www.vcskicks.com/csharp_ftp_upload.phpCode:FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(FTPAddress + "/" + Path.GetFileName(filePath)); request.Method = WebRequestMethods.Ftp.UploadFile; request.Credentials = new NetworkCredential(username, password); request.UsePassive = true; request.UseBinary = true; request.KeepAlive = false; FileStream stream = File.OpenRead(filePath); byte[] buffer = new byte[stream.Length]; stream.Read(buffer, 0, buffer.Length); stream.Close(); Stream reqStream = request.GetRequestStream(); reqStream.Write(buffer, 0, buffer.Length); reqStream.Close();