FTP Upload Class

<span id="Label3"></p><p><p>Using System;<br>Using System.Collections.Generic;<br>Using system.io;<br>Using system.linq;<br>Using system.net;<br>Using system.text;<br>Using system.web;</p></p><p>Namespace Ftphelper<br>{<br>This article is contributed by moscms<br>public class Ftp_class<br>{<br>private String ftpserverip;<br>private String ftpuserid;<br>private String ftppassword;<br>FtpWebRequest reqftp;<br>public void Connecttest (string ftpserverip, string ftpuserid, string Ftppassword)<br>{<br>To create a FtpWebRequest object from a URI<br>Reqftp = (ftpwebrequest) ftpwebrequest.create (new Uri ("ftp://" + ftpserverip));<br>Specifying data Transfer Types<br>Reqftp.usebinary = true;<br>Ftpuserid = ftpuserid;<br>FTPPassword = ftppassword;<br>FTP User name and password<br>Reqftp.credentials = new NetworkCredential (ftpuserid, ftppassword);<br> <br>}<br>#region Connection<br>private void Connect (String path)//connect FTP<br>{<br>To create a FtpWebRequest object from a URI<br>Reqftp = (ftpwebrequest) ftpwebrequest.create (new Uri (path));<br>Specifying data Transfer Types<br>Reqftp.usebinary = true;<br>FTP User name and password<br>Reqftp.credentials = new NetworkCredential (ftpuserid, ftppassword);<br>}<br>#endregion<br>#region FTP Login Information<br>public void Ftpupdown (string ftpserverip, string ftpuserid, string Ftppassword)<br>{<br>This.ftpserverip = ftpserverip;<br>This.ftpuserid = ftpuserid;<br>This.ftppassword = ftppassword;<br>}<br>#endregion<br>#region get a list of files</p><p>Get a list of files<br>Private string[] getfilelist (string path, string wrmethods)//the above code example how to get a list of files from an FTP server<br>{<br>string[] downloadfiles;<br>StringBuilder result = new StringBuilder ();<br>Try<br>{<br>Connect (path);<br>Reqftp.method = wrmethods;<br>WebResponse response = Reqftp.getresponse ();<br>StreamReader reader = new StreamReader (response. GetResponseStream (), System.Text.Encoding.UTF8);//chinese file name<br>String line = Reader. ReadLine ();<br>While (line! = Null)<br>{<br>Result. Append (line);<br>Result. Append ("\ n");<br>line = Reader. ReadLine ();<br>}<br>To remove the trailing ' \ n '<br>Result. Remove (result. ToString (). LastIndexOf (' \ n '), 1);<br>Reader. Close ();<br>Response. Close ();<br>Return Result. ToString (). Split (' \ n ');<br>}<br>Catch (Exception Ex)<br>{<br>System.Windows.Forms.MessageBox.Show (ex. Message);<br>Downloadfiles = null;<br>Return downloadfiles;<br>}<br>}<br>Public string[] getfilelist (string path)//the above code example how to get a list of files from an FTP server<br>{<br>return getfilelist ("ftp://" + ftpserverip + "/" + path, WebRequestMethods.Ftp.ListDirectory);<br>}<br>Public string[] getfilelist ()//the above code example how to get a list of files from an FTP server<br>{<br>return getfilelist ("ftp://" + ftpserverip + "/", WebRequestMethods.Ftp.ListDirectory);<br>}<br>#endregion</p><p><p>#region Uploading Files<br>public bool Upload (string filename, string path, out string Errorinfo)//the code above implements the ability to upload files from an FTP server<br>{<br>Path = Path. Replace ("\ \", "/");<br>FileInfo fileinf = new FileInfo (filename);<br>String uri = "ftp://" + path + "/" + fileinf.name;<br>Connect (uri);//connect<br>The default is true and the connection is not closed<br>is executed after a command<br>Reqftp.keepalive = false;<br>Specify what commands to execute</p></p><p>Reqftp.method = WebRequestMethods.Ftp.UploadFile;<br>Notifies server file size when uploading a file<br>Reqftp.contentlength = fileinf.length;<br>Buffer size set to KB<br>int bufflength = 2048;<br>byte[] buff = new byte[bufflength];<br>int contentlen;<br>Open a file stream (System.IO.FileStream) to read the uploaded file<br>FileStream fs = Fileinf.openread ();<br>Try<br>{<br>Write the uploaded file to the stream<br>Stream STRM = Reqftp.getrequeststream ();<br>KB per read file stream<br>Contentlen = Fs. Read (buff, 0, bufflength);<br>Stream content does not end<br>While (contentlen! = 0)<br>{<br>Write content from file stream to upload stream<br>Strm. Write (buff, 0, contentlen);<br>Contentlen = Fs. Read (buff, 0, bufflength);<br>}<br>Close two streams<br>Strm. Close ();<br>Fs. Close ();<br>ErrorInfo = "done";<br>Return true;<br>}<br>Catch (Exception Ex)<br>{<br>ErrorInfo = String. Format ("unable to complete upload because {0}", ex. Message);<br>Return false;<br>}<br>}<br>#endregion<br>#region Continuation of documents<br>public bool Upload (string filename, Long size, string path, out string Errorinfo)//the code above implements the ability to upload files from an FTP server<br>{<br>Path = Path. Replace ("\ \", "/");<br>FileInfo fileinf = new FileInfo (filename);<br>String uri = "ftp://" + path + "/" + fileinf.name;<br>String uri = "ftp://" + path;<br>Connect (uri);//connect<br>The default is true and the connection is not closed<br>is executed after a command<br>Reqftp.keepalive = false;<br>Specify what commands to execute<br>Reqftp.method = WebRequestMethods.Ftp.AppendFile;<br>Notifies server file size when uploading a file<br>Reqftp.contentlength = fileinf.length;<br>Buffer size set to KB<br>int bufflength = 2048;<br>byte[] buff = new byte[bufflength];<br>int contentlen;<br>Open a file stream (System.IO.FileStream) to read the uploaded file<br>FileStream fs = Fileinf.openread ();<br>Try<br>{<br>StreamReader Dsad = new StreamReader (fs);<br>Fs. Seek (size, seekorigin.begin);<br>Write the uploaded file to the stream<br>Stream STRM = Reqftp.getrequeststream ();<br>KB per read file stream<br>Contentlen = Fs. Read (buff, 0, bufflength);<br>Stream content does not end<br>While (contentlen! = 0)<br>{<br>Write content from file stream to upload stream<br>Strm. Write (buff, 0, contentlen);<br>Contentlen = Fs. Read (buff, 0, bufflength);<br>}<br>Close two streams</p><p><p>Strm. Close ();<br>Fs. Close ();<br>ErrorInfo = "done";<br>Return true;<br>}<br>Catch (Exception Ex)<br>{<br>ErrorInfo = String. Format ("unable to complete upload because {0}", ex. Message);<br>Return false;<br>}<br>}<br>#endregion<br>#region Download files<br>public bool Download (string ftpfilepath, string filePath, string fileName, out string errorinfo)//// The code above implements the ability to download files from an FTP server<br>{<br>Try<br>{<br>FilePath = filepath.replace ("my computer \ \", "");<br>String onlyfilename = Path.getfilename (fileName);<br>String newfilename = FilePath + onlyfilename;<br>If (file.exists (newfilename))<br>{<br>ErrorInfo = String. Format ("local file {0} already exists, could not be downloaded", newfilename);<br>Return false;<br>}<br>Ftpfilepath = Ftpfilepath. Replace ("\ \", "/");<br>String url = "ftp://" + ftpfilepath;<br>Connect (url);//connect</p></p><p>Reqftp.credentials = new NetworkCredential (ftpuserid, ftppassword);<br>FtpWebResponse response = (ftpwebresponse) Reqftp.getresponse ();<br>Stream FtpStream = Response. GetResponseStream ();<br>Long cl = Response. contentlength;<br>int buffersize = 2048;<br>int readcount;<br>byte[] buffer = new byte[buffersize];<br>Readcount = Ftpstream.read (buffer, 0, buffersize);<br>FileStream outputstream = new FileStream (newfilename, filemode.create);<br>While (readcount > 0)<br>{<br>Outputstream.write (buffer, 0, readcount);<br>Readcount = Ftpstream.read (buffer, 0, buffersize);<br>}<br>Ftpstream.close ();<br>Outputstream.close ();<br>Response. Close ();<br>ErrorInfo = "";<br>Return true;<br>}<br>Catch (Exception Ex)<br>{<br>ErrorInfo = String. Format ("cannot Download because {0}", ex.) Message);<br>Return false;<br>}<br>}<br>#endregion<br>#region Delete Files<br>public void Deletefilename (string FileName)<br>{<br>Try<br>{<br>FileInfo fileinf = new FileInfo (fileName);<br>String uri = "ftp://" + ftpserverip + "/" + fileinf.name;<br>Connect (uri);//connect<br>The default is true and the connection is not closed<br>is executed after a command<br>Reqftp.keepalive = false;<br>Specify what commands to execute<br>Reqftp.method = WebRequestMethods.Ftp.DeleteFile;<br>FtpWebResponse response = (ftpwebresponse) Reqftp.getresponse ();<br>Response. Close ();<br>}<br>Catch (Exception Ex)<br>{<br>MessageBox.Show (ex. Message, "delete error");<br>}<br>}<br>#endregion<br>#region Create a directory on FTP<br>public void MakeDir (string DirName)<br>{<br>Try<br>{<br>String uri = "ftp://" + ftpserverip + "/" + dirName;<br>Connect (uri);//connect<br>Reqftp.method = WebRequestMethods.Ftp.MakeDirectory;<br>FtpWebResponse response = (ftpwebresponse) Reqftp.getresponse ();<br>Response. Close ();<br>}<br>Catch (Exception Ex)<br>{<br>MessageBox.Show (ex. Message);<br>}<br>}<br>#endregion<br>#region Delete Directories on FTP<br>public void Deldir (string DirName)<br>{<br>Try<br>{<br>String uri = "ftp://" + ftpserverip + "/" + dirName;<br>Connect (uri);//connect<br>Reqftp.method = WebRequestMethods.Ftp.RemoveDirectory;<br>FtpWebResponse response = (ftpwebresponse) Reqftp.getresponse ();<br>Response. Close ();<br>}<br>Catch (Exception Ex)<br>{<br>}<br>}<br>#endregion<br>#region Get file Size on FTP<br>Public long GetFileSize (string Filename)<br>{<br>Long fileSize = 0;<br>filename = Filename. Replace ("\ \", "/");<br>Try<br>{<br>FileInfo fileinf = new FileInfo (filename);</p><p>String uri1 = "ftp://" + ftpserverip + "/" + fileinf.name;<br>String uri = filename;<br>String uri = "ftp://" + filename;<br>Connect (uri);//connect<br>Reqftp.method = WebRequestMethods.Ftp.GetFileSize;<br>FtpWebResponse response = (ftpwebresponse) Reqftp.getresponse ();<br>FileSize = Response. contentlength;<br>Response. Close ();<br>}<br>Catch (Exception Ex)<br>{<br>MessageBox.Show (ex. Message);<br>}<br>Return fileSize;<br>}<br>#endregion<br>Renaming files on #region FTP<br>public void Rename (string currentfilename, string Newfilename)<br>{<br>Try<br>{<br>FileInfo fileinf = new FileInfo (currentfilename);<br>String uri = "ftp://" + ftpserverip + "/" + fileinf.name;<br>Connect (uri);//connect<br>Reqftp.method = WebRequestMethods.Ftp.Rename;<br>Reqftp.renameto = newfilename;<br>FtpWebResponse response = (ftpwebresponse) Reqftp.getresponse ();<br>Stream FtpStream = Response. GetResponseStream ();<br>Ftpstream.close ();<br>Response. Close ();<br>}<br>Catch (Exception Ex)<br>{<br>MessageBox.Show (ex. Message);<br>}<br>}<br>#endregion<br>#region Get Clear Documentation<br>Public string[] getfilesdetaillist ()<br>{<br>return getfilelist ("ftp://" + ftpserverip + "/", WebRequestMethods.Ftp.ListDirectoryDetails);<br>}<br>Public string[] getfilesdetaillist (string Path)<br>{<br>Path = Path. Replace ("\ \", "/");<br>return getfilelist ("ftp://" + path, WebRequestMethods.Ftp.ListDirectoryDetails);<br>}<br>#endregion<br>}<br>}</p><p><p>FTP Upload Class</p></p></span>