在Windows上实现线程安全的ftp文件获取守护进程

我开始实现一个简单的守护进程,它在后台工作程序组件的帮助下从ftp位置获取文件,以保证线程的安全性。虽然我有点感觉我朝着正确的方向前进,但我对所涉及的技术并不完全熟悉,因此在整个应用程序生命周期中不是很轻松,我说有些场景我肯定还不知道如何处理,也就是说,如何处理停止事件,如果服务停止,会发生什么?当工人在运行时,等等。我想下面这段代码几乎不代表我要实现的目标:

#region Daemon Events
protected override void OnStart(string[] args)
{
    this.transferBackgroundWorker.RunWorkerAsync();
}

protected override void OnStop()
{
            this.transferBackgroundWorker.CancelAsync(); // Thanks Wolfwyrd!
}
#endregion

#region BackgroundWorker Events
    private void transferBackgroundWorker_DoWork(object sender, DoWorkEventArgs e)
    {
        BackgroundWorker worker = sender as BackgroundWorker;
        worker.WorkerSupportsCancellation = true;

        #region FTP Download

        FtpWebRequest ftpRequest = (FtpWebRequest)WebRequest.Create(Daemon.FTP_HOST);
        ftpRequest.Method = WebRequestMethods.Ftp.DownloadFile;
        ftpRequest.Credentials = new NetworkCredential(Daemon.FTP_USER, Daemon.FTP_PASS);
        FtpWebResponse ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();

        using(Stream ftpResponseStream = ftpResponse.GetResponseStream())
        {
            using (StreamWriter sw = File.CreateText(FILE_NAME))
            {
                sw.WriteLine(ftpResponseStream);
                sw.Close();
            }
            ftpResponse.Close();
        }
        #endregion

        e.Result = "DEBUG: Download complete" + ftpResponse.StatusDescription;
    }

private void transferBackgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
    if (e.Error != null)
    {
        EventLog.WriteEntry("Exception caught: " + e.Error.Message);
    }
    else
    {
        EventLog.WriteEntry(e.Result.ToString());
    }
}
#endregion

任何建议都会受到赞赏。非常感谢您的帮助。

编辑 :刚刚重新实现了FTP文件提取。