session.CompareDirectories

using (Session session = new Session())
{
    // Will continuously report progress of synchronization
    session.FileTransferred += FileTransferred;
 
    // Connect
    session.Open(sessionOptions);
 
    //string stamp = DateTime.Now.ToString("yyyyMMdd", CultureInfo.InvariantCulture);
    //string fileName = "export_" + stamp + ".txt";
    //string remotePath = "/home/user/sysbatch/" + fileName;
    //string localPath = @"d:\backup\" + fileName;
    string fileName = remotefileName + "*" + remotefileExte;
    string remotePath = remotefolder;
    //string localPath = remoteGoAnyWherefolder;
    string localPath = remotearchivefolder;
 
 
    //// You can achieve the same using:
    //session.SynchronizeDirectories(
    //    SynchronizationMode.Local, localPath, remotePath, false, false,
    //    SynchronizationCriteria.Time,
    //    new TransferOptions { FileMask = fileName }).Check();
 
    var diffs = session.CompareDirectories(
        SynchronizationMode.Local, localPath, remotePath, false, false,
        SynchronizationCriteria.Time,
        new TransferOptions { FileMask = fileName });
 
    if (diffs.Count>0)
    {
        foreach (ComparisonFileInfo fileInfo in diffs)
        {
            string extension = Path.GetExtension(fileInfo.FileName);
            if (string.Compare(extension, remotefileExte, true) == 0)
            {
                //Console.WriteLine("Adding {0} to listing", fileInfo.Name);
                // Download files
                TransferOptions transferOptions = new TransferOptions();
                transferOptions.TransferMode = TransferMode.Binary;
 
                TransferOperationResult transferResult;
                transferResult = session.GetFiles(fileInfo.FileName, remoteGoAnyWherefolder, false, transferOptions);
 
                // Throw on any error
                transferResult.Check();
            }
        }
    }
}