using System;using System.Collections.Generic;using System.Text;using System.Net;using System.IO;using System.Windows.Forms;  namespace ConvertData{    class FtpUpDown    {         string ftpServerip;        string ftpUserID;        string ftpPassWord;        FtpWebRequest reqFTP;         PRivate void Connect(String path)//連接ftp        {            // 根據uri創建FtpWebRequest對象            reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(path));            // 指定數據傳輸類型            reqFTP.UseBinary = true;            // ftp用戶名和密碼            reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);        }         public FtpUpDown(string ftpServerIP, string ftpUserID, string ftpPassword)        {            this.ftpServerIP = ftpServerIP;            this.ftpUserID = ftpUserID;            this.ftpPassword = ftpPassword;        }         //都調用這個        private string[] GetFileList(string path, string WRMethods)//上面的代碼示例了如何從ftp服務器上獲得文件列表        {            string[] downloadFiles;            StringBuilder result = new StringBuilder();            try            {                Connect(path);                reqFTP.Method = WRMethods;                WebResponse response = reqFTP.GetResponse();                StreamReader reader = new StreamReader(response.GetResponseStream(), System.Text.Encoding.Default);//中文文件名                string line = reader.ReadLine();                while (line != null)                {                    result.Append(line);                    result.Append("/n");                    line = reader.ReadLine();                }                // to remove the trailing '/n'                result.Remove(result.ToString().LastIndexOf('/n'), 1);                reader.Close();                response.Close();                return result.ToString().Split('/n');            }            catch (Exception ex)            {                System.Windows.Forms.MessageBox.Show(ex.Message);                downloadFiles = null;                return downloadFiles;            }        }         public string[] GetFileList(string path)//上面的代碼示例了如何從ftp服務器上獲得文件列表        {            return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectory);         }           public string[] GetFileList()//上面的代碼示例了如何從ftp服務器上獲得文件列表        {            return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectory);        }         public void Upload(string filename) //上面的代碼實現了從ftp服務器上載文件的功能        {            FileInfo fileInf = new FileInfo(filename);            string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;            Connect(uri);//連接                  // 默認為true，連接不會被關閉            // 在一個命令之后被執行            reqFTP.KeepAlive = false;            // 指定執行什么命令            reqFTP.Method = WebRequestMethods.Ftp.UploadFile;            // 上傳文件時通知服務器文件的大小            reqFTP.ContentLength = fileInf.Length;            // 緩沖大小設置為kb             int buffLength = 2048;             byte[] buff = new byte[buffLength];            int contentLen;            // 打開一個文件流(System.IO.FileStream) 去讀上傳的文件            FileStream fs = fileInf.OpenRead();            try            {                // 把上傳的文件寫入流                Stream strm = reqFTP.GetRequestStream();                // 每次讀文件流的kb                 contentLen = fs.Read(buff, 0, buffLength);                // 流內容沒有結束                while (contentLen != 0)                {                    // 把內容從file stream 寫入upload stream                     strm.Write(buff, 0, contentLen);                    contentLen = fs.Read(buff, 0, buffLength);                }                // 關閉兩個流                strm.Close();                fs.Close();            }            catch (Exception ex)            {                MessageBox.Show(ex.Message, "Upload Error");            }        }        public bool Download(string filePath, string fileName, out string errorinfo)////上面的代碼實現了從ftp服務器下載文件的功能        {            try            {                String onlyFileName = Path.GetFileName(fileName);                string newFileName = filePath + "http://" + onlyFileName;                if (File.Exists(newFileName))                {                    errorinfo = string.Format("本地文件{0}已存在,無法下載", newFileName);                    return false;                }                string url = "ftp://" + ftpServerIP + "/" + fileName;                Connect(url);//連接                  reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);                FtpWebResponse response = (FtpWebResponse)reqFTP.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);                FileStream outputStream = new FileStream(newFileName, FileMode.Create);                 while (readCount > 0)                {                    outputStream.Write(buffer, 0, readCount);                     readCount = ftpStream.Read(buffer, 0, bufferSize);                }                ftpStream.Close();                outputStream.Close();                response.Close();                errorinfo = "";                return true;            }            catch (Exception ex)            {                errorinfo = string.Format("因{0},無法下載", ex.Message);                return false;            }        }         //刪除文件          public void DeleteFileName(string fileName)         {             try             {                 FileInfo fileInf = new FileInfo(fileName);                 string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;                 Connect(uri);//連接                         // 默認為true，連接不會被關閉                  // 在一個命令之后被執行                  reqFTP.KeepAlive = false;                  // 指定執行什么命令                  reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;                 FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                 response.Close();             }             catch (Exception ex)             {                 MessageBox.Show(ex.Message, "刪除錯誤");             }         }         //創建目錄         public void MakeDir(string dirName)        {            try            {                string uri = "ftp://" + ftpServerIP + "/" + dirName;                Connect(uri);//連接                       reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                response.Close();            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            }        }        //刪除目錄        public void delDir(string dirName)        {            try            {                 string uri = "ftp://" + ftpServerIP + "/" + dirName;                Connect(uri);//連接                       reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                response.Close();            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            }        }         //獲得文件大小         public long GetFileSize(string filename)        {            long fileSize = 0;            try            {                FileInfo fileInf = new FileInfo(filename);                string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;                Connect(uri);//連接                       reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                fileSize = response.ContentLength;                response.Close();            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            }            return fileSize;        }         //文件改名        public void Rename(string currentFilename, string newFilename)        {            try            {                FileInfo fileInf = new FileInfo(currentFilename);                string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;                Connect(uri);//連接                reqFTP.Method = WebRequestMethods.Ftp.Rename;                reqFTP.RenameTo = newFilename;                FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();                //Stream ftpStream = response.GetResponseStream();                 //ftpStream.Close();                response.Close();            }            catch (Exception ex)            {                MessageBox.Show(ex.Message);            }        }         //獲得文件明晰        public string[] GetFilesDetailList()        {            return GetFileList("ftp://" + ftpServerIP + "/", WebRequestMethods.Ftp.ListDirectoryDetails);        }        //獲得文件明晰        public string[] GetFilesDetailList(string path)        {            return GetFileList("ftp://" + ftpServerIP + "/" + path, WebRequestMethods.Ftp.ListDirectoryDetails);        }               }}

private void button1_Click(object sender, EventArgs e)//文件上傳        {            FtpUpDown ftpUpDown = new FtpUpDown("192.168.2.130:21", "wl","123456");            ftpUpDown.Upload("E://other.rar");          } private void button3_Click(object sender, EventArgs e)//修改        {            FtpUpDown ftpUpDown = new FtpUpDown("192.168.2.130:21", "wl", "123456");            ftpUpDown.Rename("張三", "李四");        } private void button4_Click(object sender, EventArgs e)//刪除        {            FtpUpDown ftpUpDown = new FtpUpDown("192.168.2.130:21", "wl", "123456");            ftpUpDown.delDir("張三");        } private void button2_Click(object sender, EventArgs e)//添加        {            FtpUpDown ftpUpDown = new FtpUpDown("192.168.2.130:21", "wl", "123456");            ftpUpDown.MakeDir(this.TxT_name.Text);        }  //獲得ftp文件的文件明晰，還為處理，能夠獲得所有的文件名稱 FtpUpDown ftpUpDown = new FtpUpDown("192.168.2.130", "wl", "123456");            string[] str = ftpUpDown.GetFilesDetailList();            int i = 1;            foreach (string item in str)            {                string[] name = item.Split(' ');                TxT_name.Text += name[name.Length - 1] + ";";                i++;            }            label1.Text = i.ToString();