Download all files from a folder on FTP?

Question

Good morning,

I am developing a system that does file exchange . txt via FTP. I need to download all the files that are in a certain folder.

Today I can download one file at a time, in case I pass the connection credentials, folder name and file name, but this way is not meeting my need.

The code below is working for a single download.

Can anyone tell me what I need to adjust in this code below ? If this is possible to meet my need.

Thank you

    public static void StartDownloads(out string pstrMsg, out bool pbooRetorno, string pstrUrl, string pstrLocal, string pstrUsuario, string pstrSenha)
    {
        pstrMsg = string.Empty;
        pbooRetorno = false;

        try
        {
            // Get the object used to communicate with the server.
            FtpWebRequest request = (FtpWebRequest)WebRequest.Create(pstrUrl);
            request.Method = WebRequestMethods.Ftp.DownloadFile;

            // Credenciais utilizadas para conectar no servidor FTP
            request.Credentials = new NetworkCredential(pstrUsuario, pstrSenha);

            using (FtpWebResponse response = (FtpWebResponse)request.GetResponse())
            {
                Stream responseStream = response.GetResponseStream();

                using (StreamReader reader = new StreamReader(responseStream))
                {
                    // Cria o arquivo no local especificado
                    using (StreamWriter writer = new StreamWriter(pstrLocal))
                    {
                        string strLinhaArquivo = reader.ReadLine();

                        while (!String.IsNullOrEmpty(strLinhaArquivo))
                        {
                            // Gravar as informações no arquivo
                            writer.Write(strLinhaArquivo);

                            // Verifica se o arquivo extraido contém linha
                            if (!String.IsNullOrEmpty((strLinhaArquivo = reader.ReadLine())))
                            {
                                // Inseri uma nova linha no arquivo
                                writer.WriteLine();
                            }
                        }
                    }
                }
            }

            Uri uri = new Uri(pstrUrl);

            // Método deleta o arquivo assim que o download acaba
            DeleteFileOnServer(uri, pstrUsuario, pstrSenha); // request);

            pbooRetorno = true;
        }
        catch (Exception ex)
        {
            pstrMsg = string.Format("Erro:\nMétodo 'StartDownloads'\nDetalhes: {0}", ex.Message);

            pbooRetorno = false;
        }
    }

Answer 1

Well, I’ve used the code below:

public void BaixarTodosArquivosDirFTP(string urlFTP, string usuario, string senha, string dirLocal)
{
    FtpWebRequest ftpRequest = (FtpWebRequest)WebRequest.Create(urlFTP);
    ftpRequest.Credentials = new NetworkCredential(usuario, senha);
    ftpRequest.Method = WebRequestMethods.Ftp.ListDirectory;
    FtpWebResponse response = (FtpWebResponse)ftpRequest.GetResponse();
    StreamReader streamReader = new StreamReader(response.GetResponseStream());           
    List<string> diretorios = new List<string>();            

    string line = streamReader.ReadLine();
    while (!string.IsNullOrEmpty(line))
    {
        diretorios.Add(line);
        line = streamReader.ReadLine();
    }
    streamReader.Close();


    using (WebClient ftpClient = new WebClient())
    {
        ftpClient.Credentials = new System.Net.NetworkCredential(usuario, senha);

        for (int i = 0; i <= diretorios.Count-1; i++)
        {
            if (diretorios[i].Contains("."))
            {

                string pathRemota = urlFTP + diretorios[i].ToString();
                string pathLocal = Path.Combine(urlFTP, diretorios[i].ToString());
                ftpClient.DownloadFile(pathRemota, pathLocal);
            }
        }
    }
}

I took a question from Stackoverflow in English:

https://stackoverflow.com/questions/20526536/how-to-transfer-multiple-files-from-ftp-server-to-local-directory-using-c

Answer 2

ftpClient.DownloadFile(pathRemota, pathLocal);

I went to download several test files but gave error in this line saying "There is no support for the given path format."

Could you help me?