using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Net;
using System.IO;
///
/// Summary description for FTP
///
namespace Tools
{
public class FTP
{
public FTP()
{
//
// TODO: Add constructor logic here
//
}
public static void downloadFiles(List<String> files, String targetFolder, string FTPAddress,string username, string password)
{
foreach (string fileToDownload in files)
{
downloadFile(FTPAddress, fileToDownload, targetFolder, username, password);
}
}
public static void downloadFile(string FTPAddress, string filename,String targetFolder, string username, string password)
{
byte[] downloadedData = new byte[0];
try
{
//Create FTP request
//Note: format is ftp://server.com/file.ext
FtpWebRequest request = FtpWebRequest.Create(FTPAddress + "/" + filename) as FtpWebRequest;
//Get the file size first (for progress bar)
request.Method = WebRequestMethods.Ftp.GetFileSize;
request.Credentials = new NetworkCredential(username, password);
request.UsePassive = true;
request.UseBinary = true;
request.KeepAlive = true; //don't close the connection
int dataLength = (int)request.GetResponse().ContentLength;
//Now get the actual data
request = FtpWebRequest.Create(FTPAddress + "/" + filename) as FtpWebRequest;
request.Method = WebRequestMethods.Ftp.DownloadFile;
request.Credentials = new NetworkCredential(username, password);
request.UsePassive = true;
request.UseBinary = true;
request.KeepAlive = false; //close the connection when done
//Streams
FtpWebResponse response = request.GetResponse() as FtpWebResponse;
Stream reader = response.GetResponseStream();
//Download to memory
//Note: adjust the streams here to download directly to the hard drive
MemoryStream memStream = new MemoryStream();
byte[] buffer = new byte[1024]; //downloads in chuncks
while (true)
{
//Try to read the data
int bytesRead = reader.Read(buffer, 0, buffer.Length);
if (bytesRead == 0)
{
break;
}
else
{
//Write the downloaded data
memStream.Write(buffer, 0, bytesRead);
}
}
//Convert the downloaded stream to a byte array
downloadedData = memStream.ToArray();
// Save File to Disk
FileStream newFile = new FileStream(targetFolder + "\\" + filename, FileMode.Create);
newFile.Write(downloadedData, 0, downloadedData.Length);
newFile.Close();
//Clean up
reader.Close();
memStream.Close();
response.Close();
//MessageBox.Show("Downloaded Successfully");
}
catch (Exception)
{
//MessageBox.Show("There was an error connecting to the FTP Server.");
}
//txtData.Text = downloadedData.Length.ToString();
//this.Text = "Download Data through FTP";
//username = string.Empty;
//password = string.Empty;
}
public static List<String> getFileList(string FTPAddress, string username, string password)
{
List<string> files = new List<string>();
try
{
//Create FTP request
FtpWebRequest request = FtpWebRequest.Create(FTPAddress) as FtpWebRequest;
request.Method = WebRequestMethods.Ftp.ListDirectory;
request.Credentials = new NetworkCredential(username, password);
request.UsePassive = true;
request.UseBinary = true;
request.KeepAlive = false;
FtpWebResponse response = request.GetResponse() as FtpWebResponse;
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
while (!reader.EndOfStream)
{
//Application.DoEvents();
files.Add(reader.ReadLine());
}
//Clean-up
reader.Close();
responseStream.Close(); //redundant
response.Close();
return files;
}
catch (Exception)
{
//MessageBox.Show("There was an error connecting to the FTP Server");
files.RemoveRange(0, files.Count - 1);
return files;
}
}
public static bool uploadFile(string FTPAddress, string filePath, string username, string password)
{
try
{
string finePathName = Path.GetFileName(filePath);
//Create FTP request
FtpWebRequest request = (FtpWebRequest)FtpWebRequest.Create(FTPAddress + "/" + Path.GetFileName(filePath));
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Credentials = new NetworkCredential(username, password);
request.UsePassive = true;
request.UseBinary = true;
request.KeepAlive = false;
//Load the file
FileStream stream = File.OpenRead(filePath);
byte[] buffer = new byte[stream.Length];
stream.Read(buffer, 0, buffer.Length);
stream.Close();
//Upload file
Stream reqStream = request.GetRequestStream();
reqStream.Write(buffer, 0, buffer.Length);
reqStream.Close();
return true;
}
catch (Exception e)
{
return false;
}
}
}
}
