在c#中使用ftp下载文件

参见英文答案 > Upload file and download file from FTP                                    3个
作为初级开发人员,我应该找到一个使用ftp下载文件的解决方案,我有这个代码.
它工作但有时,我无法打开下载的文件.

public static bool DownloadDocument(string ftpPath, string downloadPath) {
  bool retVal = false;
  try {
    Uri serverUri = new Uri(ftpPath);
    if (serverUri.Scheme != Uri.UriSchemeFtp) {
        return false;
    }
    FtpWebRequest reqFTP;
    reqFTP = (FtpWebRequest)FtpWebRequest.Create(ftpPath);
    reqFTP.Credentials = new NetworkCredential(Tools.FtpUserName, Tools.FtpPassword);
    reqFTP.KeepAlive = false;
    reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
    reqFTP.UseBinary = true;
    reqFTP.Proxy = null;
    reqFTP.UsePassive = false;

    using (FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse()) {
      using (Stream responseStream = response.GetResponseStream()) {
        using (FileStream writeStream = new FileStream(downloadPath, FileMode.Create)) {
          int Length = 1024 * 1024 * 30;
          Byte[] buffer = new Byte[Length];
          responseStream.Read(buffer, 0, Length);
        }
      }
    }
    retVal = true;
  }
  catch (Exception ex) {
    //Error logging to add
  }

  return retVal;
}

有任何想法！

你为什么不用它？ Microsoft已实施 WebClient从FTP下载.

using (WebClient client = new WebClient())
{
    client.Credentials = new NetworkCredential("log", "pass");
    client.DownloadFile("ftp://ftp.example.com/remote/path/file.zip", @"C:\local\path\file.zip");

}