C # FTP upload and download code

C # FTP upload and download code

Using System; using System. Collections. Generic; using System. Linq; using System. Text; using System. Net; using System. IO; namespace JianKunKing. Common. Ftp {////// Download and upload files through ftp ///Public static class FileUpDownload {# region variable attributes ////// Ftp Server ip ///Public static string FtpServerIP = string. Empty ;////// Specify the Ftp user name ///Public static string FtpUserID = string. Empty ;////// Ftp specifies the User Password ///Public static string FtpPassword = string. Empty; # endregion # region downloads files from the FTP server and specifies the local path and local file name ////// Download the file from the FTP server and specify the local path and local file name //////Remote File Name ///Save the local file name (including the path )///Whether to enable authentication (false: allows anonymous download )///Report Progress processing (first parameter: total size, second parameter: current progress )///
 
  
Download successful?
 Public static bool FtpDownload (string remoteFileName, string localFileName, bool ifCredential, Action
 
  
UpdateProgress = null) {FtpWebRequest reqFTP, ftpsize; Stream ftpStream = null; FtpWebResponse response = null; FileStream outputStream = null; try {outputStream = new FileStream (localFileName, FileMode. create); if (FtpServerIP = null | FtpServerIP. trim (). length = 0) {throw new Exception (ftp download target server address is not set !);} Uri uri = new Uri (ftp: // + FtpServerIP +/+ remoteFileName); ftpsize = (FtpWebRequest) FtpWebRequest. create (uri); ftpsize. useBinary = true; reqFTP = (FtpWebRequest) FtpWebRequest. create (uri); reqFTP. useBinary = true; if (ifCredential) // use user identity authentication {ftpsize. credentials = new NetworkCredential (FtpUserID, FtpPassword); reqFTP. credentials = new NetworkCredential (FtpUserID, FtpPassword);} ftpsize. metho D = WebRequestMethods. ftp. getFileSize; FtpWebResponse re = (FtpWebResponse) ftpsize. getResponse (); long totalBytes = re. contentLength; re. close (); reqFTP. method = WebRequestMethods. ftp. downloadFile; response = (FtpWebResponse) reqFTP. getResponse (); ftpStream = response. getResponseStream (); // update progress if (updateProgress! = Null) {updateProgress (int) totalBytes, 0); // update progress bar} long totalDownloadedByte = 0; int bufferSize = 2048; int readCount; byte [] buffer = new byte [bufferSize]; readCount = ftpStream. read (buffer, 0, bufferSize); while (readCount> 0) {totalDownloadedByte = readCount + totalDownloadedByte; outputStream. write (buffer, 0, readCount); // update progress if (updateProgress! = Null) {updateProgress (int) totalBytes, (int) totalDownloadedByte); // update progress bar} readCount = ftpStream. read (buffer, 0, bufferSize);} ftpStream. close (); outputStream. close (); response. close (); return true;} catch (Exception) {return false; throw;} finally {if (ftpStream! = Null) {ftpStream. Close ();} if (outputStream! = Null) {outputStream. Close ();} if (response! = Null) {response. Close () ;}}# endregion # region upload the file to the FTP server ///
  /// Upload the file to the FTP server //////
  Local file name with full path ///
  Report Progress processing (first parameter: total size, second parameter: current progress )///
  
   
Download successful?
  Public static bool FtpUploadFile (string localFullPath, Action
  
   
UpdateProgress = null) {FtpWebRequest reqFTP; Stream stream = null; FtpWebResponse response = null; FileStream fs = null; try {FileInfo finfo = new FileInfo (localFullPath ); if (FtpServerIP = null | FtpServerIP. trim (). length = 0) {throw new Exception (the address of the target ftp upload server is not set !);} Uri uri = new Uri (ftp: // + FtpServerIP +/+ finfo. name); reqFTP = (FtpWebRequest) FtpWebRequest. create (uri); reqFTP. keepAlive = false; reqFTP. useBinary = true; reqFTP. credentials = new NetworkCredential (FtpUserID, FtpPassword); // user, password reqFTP. method = WebRequestMethods. ftp. uploadFile; // send the download Request command reqFTP to the server. contentLength = finfo. length; // specify the size of the uploaded file for the request. response = reqFTP. getResponse () as FtpWebRe Restore se; reqFTP. contentLength = finfo. length; int buffLength = 1024; byte [] buff = new byte [buffLength]; int contentLen; fs = finfo. openRead (); stream = reqFTP. getRequestStream (); contentLen = fs. read (buff, 0, buffLength); int allbye = (int) finfo. length; // update progress if (updateProgress! = Null) {updateProgress (int) allbye, 0); // update progress bar} int startbye = 0; while (contentLen! = 0) {startbye = contentLen + startbye; stream. Write (buff, 0, contentLen); // update progress if (updateProgress! = Null) {updateProgress (int) allbye, (int) startbye); // update progress bar} contentLen = fs. read (buff, 0, buffLength);} stream. close (); fs. close (); response. close (); return true;} catch (Exception) {return false; throw;} finally {if (fs! = Null) {fs. Close ();} if (stream! = Null) {stream. Close () ;}if (response! = Null) {response. Close () ;}}# endregion }}
  
 

 

Call instance:

Download (path without iis ):

 

FileUpDownload. FtpServerIP = 192.168.1.1; FileUpDownload. FtpUserID = ftpTest001; FileUpDownload. FtpPassword = aaaaaa; FileUpDownload. FtpDownload (Beyond downloads, Application. StartupPath +/downloads, false );

 

Previously uploaded file directory:

Upload (path without iis ):

 

OpenFileDialog op = new OpenFileDialog (); op. initialDirectory = Application. startupPath; op. restoreDirectory = true; op. filter = compressed file (*. zip) | *. zip | compressed file (*. rar) | *. rar | all files (*. *) | *. *; if (op. showDialog () = DialogResult. OK) {string aa = op. fileName; FileUpDownload. ftpServerIP = 192.168.1.1; FileUpDownload. ftpUserID = ftpTest001; FileUpDownload. ftpPassword = aaaaaa; // full path FileUpDownload. ftpUploadFile (aa );}