FtpWebRequest對象下載指定ftp服務器上的文件

           Uri ftpUri = new Uri("ftp://192.168.1.50/ligang/安全法.rar");

            string ftp = "d.sql";

            FtpWebRequest ftpRequest = (FtpWebRequest)WebRequest.Create(ftpUri);

            FtpWebResponse ftpResponse = null;

            FileStream ftpfile = new FileStream("E://WinCE//FtpCode//安全法.rar", FileMode.Create);

            ftpRequest.Credentials = new NetworkCredential("liupeng", "liupeng");

            ftpRequest.Method = WebRequestMethods.Ftp.DownloadFile;

            ftpRequest.UseBinary = true;

            ftpResponse = (FtpWebResponse)ftpRequest.GetResponse();

            Stream ftpstream = ftpResponse.GetResponseStream();

            byte[] ftpbyte = new byte[2048];

            int readcout = 0;

            readcout = ftpstream.Read(ftpbyte,0,2048);

            while (readcout > 0)

            {

                ftpfile.Write(ftpbyte,0,readcout);

                readcout = ftpstream.Read(ftpbyte, 0, 2048);

            }

            ftpfile.Close();

            ftpResponse.Close();

            ftpstream.Close();