public static void DownloadFtpDirectory(NetworkCredential creds, string host, string remoteDir, string destinationDir, ShouldDownloadFile sdlf)
{
Directory.CreateDirectory(destinationDir);
using (FtpClient ftp = new FtpClient {
Credentials = creds, Host = host
})
{
ftp.Connect();
var listing = ftp.GetListing(remoteDir);
foreach (var item in listing)
{
if (item.Type != FtpFileSystemObjectType.File)
{
continue;
}
try
{
TryDownloadFile(ftp, item, remoteDir, destinationDir, sdlf);
}
catch (IOException ex)
{
throw new Exception("Unable to download file.", ex);
}
}
}
}
private static void TryDownloadFile(FtpClient ftpClient, FtpListItem item, string remoteDir, string destinationDir, ShouldDownloadFile sdlf)
{
bool shouldDownload = sdlf(item.Name);
if (!shouldDownload)
{
return;
}
string fileFullPath = destinationDir + "/" + item.Name;
using (var stream = ftpClient.OpenRead(remoteDir + "/" + item.Name, FtpDataType.Binary))
{
if (stream.Length != 0)
{
// Create a FileStream object to write a stream to a file
using (FileStream fileStream = File.Create(fileFullPath, (int)stream.Length))
{
stream.CopyTo(fileStream);
}
}
}
}
