how to upload file using FTP? how to do in c# .net

Question

how to upload file using FTP? my requirement is i have 3 textbox for serveraddressusernametextbox.and one button for connect to server and another button for upload file. how to do in c# .net ? with example and code?

Jonathan Ng · Answer

That would be as simple as the following code using this .NET FTP library .: using System; using ComponentPro.Net; ... // Create a new instance. Ftp client = new Ftp(); // Connect to the FTP server. client.Connect(localhost); // Authenticate. client.Authenticate(test test); // ... // Upload local file 'c:	est.dat' to '/test.dat'. client.UploadFile(c:\test.dat /test.dat); // ... // Disconnect. client.Disconnect();

Amit Choudhary · Answer

Here's the complete code to upload to an FTP site: using System; using System.Collections.Generic; using System.Net; using System.IO; namespace SampleApplication { public class FTPFileUploader { private string host; private string user; private string pass; private string connType; private bool useBinary; private bool usePassive; public FTPFileUploader(string host string user string password string connectionType) { this.user = user; this.pass = password; this.connType = connectionType.ToLower(); if (this.connType == ftp) { this.host = ftp:// + host + /; } else { this.host = host; } useBinary = false; usePassive = false; } public bool Put(string fileToUpload string uploadFile) { bool result = false; try { if (connType == ftp) { byte[] buffer = new byte[1024]; //in chuncks of 1024 int bytesRead; var request = FtpWebRequest.Create(host + uploadFile) as FtpWebRequest; request.Method = WebRequestMethods.Ftp.UploadFile; request.UsePassive = usePassive; request.UseBinary = useBinary; request.KeepAlive = true; request.Timeout = 60 * 1000 * 5; // five minutes request.Credentials = new NetworkCredential(user pass); Stream responseStream = request.GetRequestStream(); FileStream fileUploading = File.OpenRead(fileToUpload); while ((bytesRead = fileUploading.Read(buffer 0 buffer.Length)) != 0) { responseStream.Write(buffer 0 bytesRead); } responseStream.Close(); fileUploading.Close(); } result = true; } catch(Exception ex) { throw new FileTransferClientException(Failure in FileTransferClient.Put(string fileToUpload uploadFile) ex); } return result; } public bool Put(string[] files string dir) { bool result = false; try { if (connType == ftp) { int lastIndex = 0; foreach (string file in files) { lastIndex = file.LastIndexOf('\'); if (lastIndex >= file.Length || lastIndex { lastIndex = 0; } string fileName = file.Substring(lastIndex); if(!Put(file dir + fileName)) { //how to handle some file exceptions } } } result = true; } catch(Exception ex) { throw new FileTransferClientException(Failure in FileTransferClient.Put(string[] files string dir) ex); } return result; } public bool MakeDirectory(string path) { bool result = false; try { if (connType == ftp) { var request = FtpWebRequest.Create(host + path) as FtpWebRequest; request.Method = WebRequestMethods.Ftp.MakeDirectory; request.UsePassive = usePassive; request.UseBinary = useBinary; request.KeepAlive = true; request.Timeout = 30 * 1000; // half minute request.Credentials = new NetworkCredential(user pass); request.GetResponse().Close(); } else if (connType == sftp) { var sftp = new Sftp(host user pass); sftp.Connect(); sftp.Mkdir(path); sftp.Close(); } result = true; } catch (Exception ex) { throw new FileTransferClientException(FileTransferClient.MakeDirectory(string path) ex); } return result; } } }