C # winfrom implements analog ftp file management,

C # winfrom implements analog ftp file management,

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) // connect to ftp {// create FtpWebRequest object reqFTP = (FtpWebRequest) FtpWebRequest according to uri. create (new Uri (path); // specify the data transmission type reqFTP. useBin Ary = true; // The ftp user name and password reqFTP. credentials = new NetworkCredential (ftpUserID, ftpPassword);} public FtpUpDown (string ftpServerIP, string ftpUserID, string ftpPassword) {this. ftpServerIP = ftpServerIP; this. ftpUserID = ftpUserID; this. ftpPassword = ftpPassword;} // call this private string [] GetFileList (string path, string WRMethods) // The code above demonstrates how to obtain the file list from the ftp server {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); // Chinese file name 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) // The code above demonstrates how to obtain the file list from the ftp server {return GetFileList ("ftp: //" + ftpServerIP + "/" + path, WebRequestMethods. ftp. listDirectory);} public string [] GetFileList () // The code above demonstrates how to obtain the file list from the ftp server {return GetFileList ("ftp: // "+ ftpServerIP +"/", WebRequestMethods. ftp. listDirectory);} public void Upload (string filename) // the above Code implements the function of uploading files from the ftp server {FileInfo fileInf = new FileInfo (filename ); string uri = "ftp ://" + FtpServerIP + "/" + fileInf. name; Connect (uri); // connection // The default value is true, and the connection will not be closed // reqFTP is executed after a command. keepAlive = false; // specifies the command to execute reqFTP. method = WebRequestMethods. ftp. uploadFile; // notify the server of the file size reqFTP when uploading the file. contentLength = fileInf. length; // set the buffer size to kb int buffLength = 2048; byte [] buff = new byte [buffLength]; int contentLen; // open a file stream (System. IO. fileStream) to read the uploaded file FileStream fs = fileInf. openRead (); tr Y {// write the uploaded file to the Stream strm = reqFTP. getRequestStream (); // kb contentLen = fs. read (buff, 0, buffLength); // The stream content has not ended while (contentLen! = 0) {// write content from file stream to upload stream strm. write (buff, 0, contentLen); contentLen = fs. read (buff, 0, buffLength);} // close two streams strm. close (); fs. close ();} catch (Exception ex) {MessageBox. show (ex. message, "Upload Error") ;}} public bool Download (string filePath, string fileName, out string errorinfo) /// the above Code implements the file download function from the ftp server {try {String onlyFileName = Path. getFileName (fileName); string newFileName = filePath + "\" + onlyFileName; if (File. exists (newFileName) {errorinfo = string. format ("the local file {0} already exists and cannot be downloaded", newFileName); return false;} string url = "ftp: //" + ftpServerIP + "/" + fileName; connect (url); // Connect to 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 ("unable to download because {0}", ex. message); return false ;}}// Delete the public void DeleteFileName (string fileName) {try {FileInfo fileInf = new FileInfo (fileName); string uri = "ftp: // "+ ftpServerIP +"/"+ fileInf. name; Connect (uri); // connection // The default value is true, and the connection will not be closed // reqFTP is executed after a command. keepAlive = false; // specifies the command to execute reqFTP. method = WebRequestMethods. ftp. deleteFile; FtpWebResponse response = (FtpWebResponse) reqFTP. getResponse (); response. close ();} catch (Exception ex) {MessageBox. show (ex. message, "delete error") ;}}// create the public void MakeDir (string dirName) Directory {try {string uri = "ftp: // "+ ftpServerIP +"/"+ dirName; Connect (uri); // Connect to reqFTP. method = WebRequestMethods. ftp. makeDirectory; FtpWebResponse response = (FtpWebResponse) reqFTP. getResponse (); response. close ();} catch (Exception ex) {MessageBox. show (ex. message) ;}}// Delete the directory public void delDir (string dirName) {try {string uri = "ftp: //" + ftpServerIP + "/" + dirName; connect (uri); // Connect to reqFTP. method = WebRequestMethods. ftp. removeDirectory; FtpWebResponse response = (FtpWebResponse) reqFTP. getResponse (); response. close ();} catch (Exception ex) {MessageBox. show (ex. message) ;}}// get the file size public long GetFileSize (string filename) {long fileSize = 0; try {FileInfo fileInf = new FileInfo (filename); string uri = "ftp: // "+ ftpServerIP +"/"+ fileInf. name; Connect (uri); // Connect to reqFTP. method = WebRequestMethods. ftp. getFileSize; FtpWebResponse response = (FtpWebResponse) reqFTP. getResponse (); fileSize = response. contentLength; response. close ();} catch (Exception ex) {MessageBox. show (ex. message);} return fileSize;} // Rename the file public void Rename (string currentFilename, string newFilename) {try {FileInfo fileInf = new FileInfo (currentFilename); string uri = "ftp: // "+ ftpServerIP +"/"+ fileInf. name; Connect (uri); // Connect to 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) ;}}// get the object clear public string [] GetFilesDetailList () {return GetFileList ("ftp: //" + ftpServerIP + "/", WebRequestMethods. ftp. listDirectoryDetails);} // obtain the public string [] GetFilesDetailList (string path) {return GetFileList ("ftp: //" + ftpServerIP + "/" + path, WebRequestMethods. ftp. listDirectoryDetails );}}}

The above example shows how to substitute

Private void button1_Click (object sender, EventArgs e) // File Upload {FtpUpDown ftpUpDown = new FtpUpDown ("192.168.2.130: 21", "wl", "123456"); ftpUpDown. upload ("E: \ other.rar");} private void button3_Click (object sender, EventArgs e) // modify {FtpUpDown ftpUpDown = new FtpUpDown ("192.168.2.130: 21 ", "wl", "123456"); ftpUpDown. rename ("Zhang San", "Li Si");} private void button4_Click (object sender, EventArgs e) // Delete {FtpUpDown ftpUpDown = new FtpUpDown ("192.168.2.130: 21 ", "wl", "123456"); ftpUpDown. delDir ("Zhang San");} private void button2_Click (object sender, EventArgs e) // Add {FtpUpDown ftpUpDown = new FtpUpDown ("192.168.2.130: 21", "wl ", & quot; 123456 & quot;); ftpUpDown. makeDir (this. txT_name.Text);} // clear the ftp file. for processing, you can obtain all the file names 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 ();