Upload file to FTP using C

Question

I try upload a file to an FTP-server with C   The file is uploaded but with zero bytes   private void button2 Click object sender  EventArgs e        var dirPath     C  Documents and Settings sander GD Bureaublad test         ftp ftpClient   new ftp  ftp   example com     username    password         string   files   Directory GetFiles dirPath              var uploadPath     httpdocs album        foreach  string file in files                ftpClient createDirectory   test             ftpClient upload uploadPath         Path GetFileName file   file              if  string IsNullOrEmpty txtnaam Text                 MessageBox Show  Gelieve uw naam in te geven

User · Answer

In the first example must change those to   requestStream Flush    requestStream Close      First flush and after that close

User · Answer

public static void UploadFileToFtp string url  string filePath  string username  string password        var fileName   Path GetFileName filePath       var request    FtpWebRequest WebRequest Create url   fileName        request Method   WebRequestMethods Ftp UploadFile      request Credentials   new NetworkCredential username  password       request UsePassive   true      request UseBinary   true      request KeepAlive   false       using  var fileStream   File OpenRead filePath                 using  var requestStream   request GetRequestStream                          fileStream CopyTo requestStream               requestStream Close                         var response    FtpWebResponse request GetResponse        Console WriteLine  Upload done   0    response StatusDescription       response Close

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This works for me this method will SFTP a file to a location within your network  It uses SSH NET 2013 4 7 library One can just download it for free         Secure FTP     public void SecureFTPUploadFile string destinationHost int port string username string password string source string destination                 ConnectionInfo ConnNfo   new ConnectionInfo destinationHost  port  username  new PasswordAuthenticationMethod username  password             var temp   destination Split               string destinationFileName   temp temp Count   - 1           string parentDirectory   destination Remove destination Length -  destinationFileName Length   1   destinationFileName Length   1             using  var sshclient   new SshClient ConnNfo                         sshclient Connect                using  var cmd   sshclient CreateCommand  mkdir -p     parentDirectory      amp  amp  chmod  rw     parentDirectory                                 cmd Execute                              sshclient Disconnect                        using  var sftp   new SftpClient ConnNfo                         sftp Connect                sftp ChangeDirectory parentDirectory               using  var uplfileStream   System IO File OpenRead source                                 sftp UploadFile uplfileStream  destinationFileName  true                             sftp Disconnect

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I have observed that -   FtpwebRequest is missing  As the target is FTP  so the NetworkCredential required     I have prepared a method that works like this  you can replace the value of the variable ftpurl with the parameter TargetDestinationPath  I had tested this method on winforms application    private void UploadProfileImage string TargetFileName  string TargetDestinationPath  string FiletoUpload                          Get the Image Destination path             string imageName   TargetFileName    you can comment this             string imgPath   TargetDestinationPath                string ftpurl    ftp   downloads abc com downloads abc com MobileApps SystemImages ProfileImages     imgPath              string ftpusername   krayknot DAL clsGlobal FTPUsername              string ftppassword   krayknot DAL clsGlobal FTPPassword              string fileurl   FiletoUpload               FtpWebRequest ftpClient    FtpWebRequest FtpWebRequest Create ftpurl               ftpClient Credentials   new System Net NetworkCredential ftpusername  ftppassword               ftpClient Method   System Net WebRequestMethods Ftp UploadFile              ftpClient UseBinary   true              ftpClient KeepAlive   true              System IO FileInfo fi   new System IO FileInfo fileurl               ftpClient ContentLength   fi Length              byte   buffer   new byte 4097               int bytes   0              int total bytes    int fi Length              System IO FileStream fs   fi OpenRead                System IO Stream rs   ftpClient GetRequestStream                while  total bytes  gt  0                                bytes   fs Read buffer  0  buffer Length                   rs Write buffer  0  bytes                   total bytes   total bytes - bytes                              fs Flush                fs Close                rs Close                FtpWebResponse uploadResponse    FtpWebResponse ftpClient GetResponse                string value   uploadResponse StatusDescription              uploadResponse Close                Let me know in case of any issue  or here is one more link that can help you   https   msdn microsoft com en-us library ms229715 v vs 110  aspx

User · Answer

Easiest way The most trivial way to upload a file to an FTP server using  NET framework is using WebClient UploadFile method  WebClient client   new WebClient    client Credentials   new NetworkCredential  quot username quot    quot password quot    client UploadFile  quot ftp   ftp example com remote path file zip quot     quot C  local path file zip quot      Advanced options If you need a greater control  that WebClient does not offer  like TLS SSL encryption  ascii text transfer mode  active mode  transfer resuming  progress monitoring  etc   use FtpWebRequest  Easy way is to just copy a FileStream to an FTP stream using Stream CopyTo  FtpWebRequest request        FtpWebRequest WebRequest Create  quot ftp   ftp example com remote path file zip quot    request Credentials   new NetworkCredential  quot username quot    quot password quot    request Method   WebRequestMethods Ftp UploadFile     using  Stream fileStream   File OpenRead   quot C  local path file zip quot    using  Stream ftpStream   request GetRequestStream          fileStream CopyTo ftpStream       Progress monitoring If you need to monitor an upload progress  you have to copy the contents by chunks yourself  FtpWebRequest request        FtpWebRequest WebRequest Create  quot ftp   ftp example com remote path file zip quot    request Credentials   new NetworkCredential  quot username quot    quot password quot    request Method   WebRequestMethods Ftp UploadFile     using  Stream fileStream   File OpenRead   quot C  local path file zip quot    using  Stream ftpStream   request GetRequestStream          byte   buffer   new byte 10240       int read      while   read   fileStream Read buffer  0  buffer Length    gt  0                ftpStream Write buffer  0  read           Console WriteLine  quot Uploaded  0  bytes quot   fileStream Position             For GUI progress  WinForms ProgressBar   see C  example at  How can we show progress bar for upload with FtpWebRequest  Uploading folder If you want to upload all files from a folder  see Upload directory of files to FTP server using WebClient  For a recursive upload  see Recursive upload to FTP server in C

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public void UploadFtpFile string folderName  string fileName         FtpWebRequest request       string folderName       string fileName      string absoluteFileName   Path GetFileName fileName        request   WebRequest Create new Uri string Format   ftp    0   1   2     127 0 0 1   folderName  absoluteFileName    as FtpWebRequest      request Method   WebRequestMethods Ftp UploadFile      request UseBinary   1      request UsePassive   1      request KeepAlive   1      request Credentials    new NetworkCredential user  pass       request ConnectionGroupName    group         using  FileStream fs   File OpenRead fileName                 byte   buffer   new byte fs Length           fs Read buffer  0  buffer Length           fs Close            Stream requestStream   request GetRequestStream            requestStream Write buffer  0  buffer Length           requestStream Flush            requestStream Close              How to use  UploadFtpFile  testFolder    E   filesToUpload  test img      use this in your foreach  and you only need to create folder one time  to create a folder   request   WebRequest Create new Uri string Format   ftp    0   1      127 0 0 1    testFolder     as FtpWebRequest  request Method   WebRequestMethods Ftp MakeDirectory  FtpWebResponse ftpResponse    FtpWebResponse request GetResponse

User · Answer

The existing answers are valid  but why re-invent the wheel and bother with lower level WebRequest types while WebClient already implements FTP uploading neatly   using  var client   new WebClient          client Credentials   new NetworkCredential ftpUsername  ftpPassword       client UploadFile  ftp   host path zip   WebRequestMethods Ftp UploadFile  localFile

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publish date  06 26 2018  https   docs microsoft com en-us dotnet framework network-programming how-to-upload-files-with-ftp  using System  using System IO  using System Net  using System Text   namespace Examples System Net       public class WebRequestGetExample           public static void Main                     Get the object used to communicate with the server          FtpWebRequest request     FtpWebRequest WebRequest Create  ftp   www contoso com test htm            request Method   WebRequestMethods Ftp UploadFile              This example assumes the FTP site uses anonymous logon          request Credentials   new NetworkCredential  anonymous     janeDoe contoso com                Copy the contents of the file to the request stream          byte   fileContents          using  StreamReader sourceStream   new StreamReader  testfile txt                          fileContents   Encoding UTF8 GetBytes sourceStream ReadToEnd                        request ContentLength   fileContents Length           using  Stream requestStream   request GetRequestStream                          requestStream Write fileContents  0  fileContents Length                      using  FtpWebResponse response    FtpWebResponse request GetResponse                          Console WriteLine   Upload File Complete  status   response StatusDescription

User · Answer

The following works for me   public virtual void Send string fileName  byte   file        ByteArrayToFile fileName  file        var request    FtpWebRequest  WebRequest Create new Uri ServerUrl   fileName         request Method   WebRequestMethods Ftp UploadFile      request UsePassive   false      request Credentials   new NetworkCredential UserName  Password       request ContentLength   file Length       var requestStream   request GetRequestStream        requestStream Write file  0  file Length       requestStream Close         var response    FtpWebResponse  request GetResponse         if  response    null          response Close        You can t read send the file parameter in your code as it is only the filename   Use the following   byte   bytes   File ReadAllBytes dir   file     To get the file so you can pass it to the Send method

[c#] Upload file to FTP using C#

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