title: How get all directories on hard drive (c#)?
body: <p>How can I get all directories (with sub directories) on hardrive using c#?</p>
  
  <p>Example of response:</p>
  
  <pre><code>C:\
  C:\1
  C:\2
  C:\2\1
  C:\2\1\4
  C:\2\1\4\5
  C:\2\1\4\5\6
  C:\3
  </code></pre>