笔记:C# 中FTP的上传与下载

配置参数

        public string FtpURL = " "; //地址
        public string FtpUser = " "; //ftp账号
        public string FtpPassWord = " "; //ftp密码

上传文件

  public void UpLoad(string 文件路径)
        {
            FileInfo info = new FileInfo(文件路径);
            FtpWebRequest reqFTP;
            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(上传文件目标路径"));
            reqFTP.Credentials = new NetworkCredential(FtpUser,FtpPassWord);
            reqFTP.KeepAlive = false;
            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
            reqFTP.UseBinary = true;
            reqFTP.ContentLength = info.Length;
            int bufflength = 2048;
            byte[] buff = new byte[bufflength];
            int contentlen;
            FileStream fs = info.OpenRead();
            try
            {
                Stream strm = reqFTP.GetRequestStream();
                contentlen = fs.Read(buff, 0, bufflength);
                while(contentlen != 0 )
                {
                    strm.Write(buff, 0, contentlen);
                    contentlen = fs.Read(buff, 0, bufflength);
                }
                UpLoadBySQL(NowKey);
                MessageBox.Show("FTP上傳成功!","成功");
                strm.Close();
                fs.Close();
              }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message, "Error");
            }




        }

下载

        public void DownLoad(string FTP文件路径)
        {
            Uri uri = new Uri(FTP文件路径);
            string tmpName = Guid.NewGuid().ToString();
            string localfile = 下载目标路径;
            FtpWebRequest reqFtp = (FtpWebRequest)FtpWebRequest.Create(uri);
            reqFtp.UseBinary = true;
            reqFtp.Credentials = new NetworkCredential(FtpUser, FtpPassWord);
            FtpWebResponse res = (FtpWebResponse)reqFtp.GetResponse();
            Stream ftpstream = res.GetResponseStream();
            long cl = res.ContentLength;
            int buffsize = 2048;
            int readcount;
            byte[] buffer = new byte[buffsize];
            readcount = ftpstream.Read(buffer, 0, buffsize);
            FileStream output = new FileStream(localfile, FileMode.Create);
            while(readcount >0)
            {
                output.Write(buffer, 0, readcount);
                readcount = ftpstream.Read(buffer, 0, buffsize);

            }
            ftpstream.Close();
            output.Close();
            res.Close();

        }