Search code examples
c#ftpdownloadnetworkcredentials

C# single file FTP download


I am trying to download a file usng FTP within a C# console application, but even though I now the paths are correct I always get an error saying "550 file not found".

Is there any way, to return the current path (once connected to the server)?

// lade datei von FTP server
        string ftpfullpath = "ftp://" + Properties.Settings.Default.FTP_Server + Properties.Settings.Default.FTP_Pfad + "/" + Properties.Settings.Default.FTP_Dateiname;
        Console.WriteLine("Starte Download von: " + ftpfullpath);
        using (WebClient request = new WebClient())
        {
            request.Credentials = new NetworkCredential(Properties.Settings.Default.FTP_User, Properties.Settings.Default.FTP_Passwort);
            byte[] fileData = request.DownloadData(ftpfullpath);

            using (FileStream file = File.Create(@path + "/tmp/" + Properties.Settings.Default.FTP_Dateiname))
            {
                file.Write(fileData, 0, fileData.Length);
                file.Close();
            }
            Console.WriteLine("Download abgeschlossen!");
        }

EDIT My mistake. Fixed the filepath, still getting the same error. But if I connect with FileZilla that's the exact file path.


Solution

  • Finally found a solution by using System.Net.FtpClient (https://netftp.codeplex.com/releases/view/95632) and using the following code.

    // aktueller pfad
            string apppath = Directory.GetCurrentDirectory();
    
            Console.WriteLine("Bereite Download von FTP Server vor!");
    
            using (var ftpClient = new FtpClient())
            {
                ftpClient.Host = Properties.Settings.Default.FTP_Server;
                ftpClient.Credentials = new NetworkCredential(Properties.Settings.Default.FTP_User, Properties.Settings.Default.FTP_Passwort);
                var destinationDirectory = apppath + "\\Input";
    
                ftpClient.Connect();
    
                var destinationPath = string.Format(@"{0}\{1}", destinationDirectory, Properties.Settings.Default.FTP_Dateiname);
                Console.WriteLine("Starte Download von " + Properties.Settings.Default.FTP_Dateiname + " nach " + destinationPath);
                using (var ftpStream = ftpClient.OpenRead(Properties.Settings.Default.FTP_Pfad + "/" + Properties.Settings.Default.FTP_Dateiname))
                using (var fileStream = File.Create(destinationPath , (int)ftpStream.Length))
                {
                    var buffer = new byte[8 * 1024];
                    int count;
                    while ((count = ftpStream.Read(buffer, 0, buffer.Length)) > 0)
                    {
                        fileStream.Write(buffer, 0, count);
                    }
                }
            }