title: How to Delete folder older than 7 days C# / NET
body: <p>I want to write some code that deletes all DIRECTORIES older than 7 days.</p>
  
  <p>So:</p>
  
  <ol>
  <li>Check directory : <code>D:\this</code></li>
  <li>If folder older than  7  days -> delete it from the system.</li>
  </ol>