title: SearchPattern for Directory.GetDirectories in C#
body: <p>Desired search description:</p>
  
  <pre><code>Any string that contains either v2 or v3 (case insensitive)
  </code></pre>
  
  <p>I am trying to find subdirectory paths using Directory.GetDirectories(path, searchPattern), and I was going to supply the regex pattern for searchPattern argument, but apparently, searchPattern can't be regex expression. </p>
  
  <p>Are there any other good ways to filter file names that contain v2 or v3?</p>