Ftp上传下载

Ftp 上传

//上传FTP 
        public static string UpFtpServer="192.168.100.111";
        public static string UpUserID= "sa";
        public static string UpPassWord = "123456";

 private void btnUp_Click(object sender, EventArgs e)
        {
            try
            {
               upFile();
            }
            catch (Exception ex)
            {
                MessageBoxEx.Show("上传文件发生错误,错误信息:" + ex.Message, "注意", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }

 //上传文件到ftp
        private void upFile()
        {

            #region 上传的文件路径
            string directoryPath = System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName;
            int nIndex = directoryPath.LastIndexOf("\");
            directoryPath = directoryPath.Substring(0, nIndex);
            directoryPath += "\InData\";
            #endregion
            string[] fileName = Directory.GetFiles(directoryPath, "*.txt");

            Array array = Array.CreateInstance(typeof(string), fileName.Length);

            fileName.CopyTo(array, 0);
            IList<string> successname = new List<string>();
            IList<string> failname = new List<string>();

            string address = "", userName = "", pass = "", Report = "";

            for (int i = 0; i < array.Length; i++)
            {
                if (File.Exists(array.GetValue(i).ToString()))
                {
                    FileInfo fi = new FileInfo(array.GetValue(i).ToString());
                    FileStream fs = fi.OpenRead();                    //以只读的模式创建一个文件流
                    Stream s = null;
                    try
                    {
                        address = UpFtpServer.Trim();
                        address = address.ToUpper().IndexOf("FTP://") < 0 ? ("FTP://" + address) : address;
                        userName = UpUserID.Trim();
                        pass = UpPassWord.Trim();

                        FtpWebRequest fwr = (FtpWebRequest)FtpWebRequest.Create(address + "/InData/" + Path.GetFileName(array.GetValue(i).ToString()));//创建一个ftpwebrequest对象                             

                        fwr.Credentials = new NetworkCredential(userName, pass);

                        fwr.KeepAlive = true;                             //执行完一次命令后是否保持连接                             
                        fwr.Method = WebRequestMethods.Ftp.UploadFile;    //指出要执行的命令方式                            
                        fwr.UseBinary = true;                             //指出文件的数据传输类型                             
                        fwr.UsePassive = true;

                        int length = unchecked(Convert.ToInt32(fi.Length));
                        fwr.ContentLength = length;
                        s = fwr.GetRequestStream();

                        if (length <= 1000 * 1024)    //文件上传的大小不能大于1000KB足够啦
                        {
                            byte[] b = new byte[length];
                            //先利用一个fileinfo跟一个文本文件关联起来 然后利用fileinfo的openread以只读的方式打开文本文件
                            //并返回一个filestream文件流
                            fs.Read(b, 0, length);
                            s.Write(b, 0, length);

                            if (successname.IndexOf(array.GetValue(i).ToString()) < 0)
                            {
                                successname.Add(array.GetValue(i).ToString());
                            }

                            Report = Report + "," + Path.GetFileName(array.GetValue(i).ToString());
                        }

                        fs.Close();
                        s.Close();
                    }
                    catch (Exception)
                    {
                        if (failname.IndexOf(array.GetValue(i).ToString()) < 0)
                        {
                            failname.Add(array.GetValue(i).ToString());
                        }
                    }
                    finally
                    {
                        fs.Close();
                    }
                }

            }

            foreach (string filename in successname)
            {
                if (failname.IndexOf(filename) < 0)
                {
                    File.Delete(filename);          //上传完毕后就删除
                }
            }
            MessageBoxEx.Show("本次共成功上传了" + successname.Count.ToString() + "个文件,失败" + failname.Count.ToString() + "个！", "注意", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

  
    private void btnDownlod_Click(object sender, EventArgs e)
    {
                try
                {
                    #region 下载
                    //获取下载文件的文件名
                    List<string> DirctoryFile = GetDirctory("//");
                    MessageBox.Show("读取文件成功，共读取文件" + DirctoryFile.Count() + "条数据");
                    for (int i = 0; i < DirctoryFile.Count; i++)
                    {
                      
                        //下载
                        if (download(DirctoryFile[i]))
                        {
                            
                        }

                    }

                    MessageBox.Show("下载成功,共下载" + DirctoryFile.Count() + "个文件");
                    #endregion
                }
                catch
                { }
            
        }
  
  
  /// 从ftp服务器上获得文件列表
        /// </summary>
        /// <param name="RequedstPath">服务器下的相对路径</param>
        /// <returns></returns>
        public List<string> GetDirctory(string RequedstPath)
        {
            List<string> strs = new List<string>();
            try
            {
                string uri = "FTP://" + UpFtpServer + "/Download" + RequedstPath;   //目标路径 path为服务器地址
                FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
                // ftp用户名和密码
                reqFTP.Credentials = new NetworkCredential(UpUserID, UpPassWord);
                reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
                WebResponse response = reqFTP.GetResponse();
                StreamReader reader = new StreamReader(response.GetResponseStream());//中文文件名
                string line = reader.ReadLine();
                while (line != null)
                {
                    if (!line.Contains("<DIR>")) //不是文件夹
                    {
                        //string msg = line.Substring(39).ToUpper().Trim();
                        string[] msgArray = line.Split(' ');
                        string msg = msgArray[msgArray.Count() - 1].ToString();
                        if (msg.LastIndexOf("TXT") > 0)
                        {
                                strs.Add(msg);
                        }

                    }
                    line = reader.ReadLine();
                }
                reader.Close();
                response.Close();
                return strs;
            }
            catch (Exception ex)
            {
                ex.ToString();
            }
            return strs;
        }
        /// <summary>
        /// 单个文件下载方法
        /// </summary>
        /// <param name="adss">保存文件的本地路径</param>
        /// <param name="ftpadss">下载文件的FTP路径</param>
        public bool download(string adss)
        {
            bool IsOk = false;

            try
            {
                string directoryPath = System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName;
                int nIndex = directoryPath.LastIndexOf("\");
                directoryPath = directoryPath.Substring(0, nIndex);
                directoryPath += "/Download/";
                //FileMode常数确定如何打开或创建文件,指定操作系统应创建新文件。
                //FileMode.Create如果文件已存在，它将被改写
                FileStream outputStream = new FileStream(directoryPath + adss, FileMode.Create);
                FtpWebRequest downRequest = (FtpWebRequest)WebRequest.Create(new Uri("FTP://" + UpFtpServer + "/Download/" + adss.ToString()));
                downRequest.Credentials = new NetworkCredential(UpUserID, UpPassWord);
                //设置要发送到 FTP 服务器的命令
                downRequest.Method = WebRequestMethods.Ftp.DownloadFile;
                downRequest.KeepAlive = true;                             //执行完一次命令后是否保持连接        
                downRequest.UseBinary = true;                             //指出文件的数据传输类型   
                downRequest.UsePassive = true;
                FtpWebResponse response = (FtpWebResponse)downRequest.GetResponse();

                Stream ftpStream = response.GetResponseStream();
                long cl = response.ContentLength;
                int bufferSize = 2048;
                int readCount;
                byte[] buffer = new byte[bufferSize];
                readCount = ftpStream.Read(buffer, 0, bufferSize);

                while (readCount > 0)
                {
                    outputStream.Write(buffer, 0, readCount);
                    readCount = ftpStream.Read(buffer, 0, bufferSize);
                }

                ftpStream.Close();
                outputStream.Close();
                response.Close();


                IsOk = true;

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());

                IsOk = false;
            }


            return IsOk;

        }