title: Listens to the file system
body: <p>i want to write application how handle with files and listen to directory root and add to my application only files who created in the lase 2 days.</p>
  
  <ol>
  <li><p><code>FileSystemWatcher</code> Class can listen only to one directory or can do it with all the sub directories under my root folder ?</p></li>
  <li><p>what is the best option to find only files who created in the lase 2 days ? (FileInfo.CreationTime ?)</p></li>
  </ol>