title: extract fileName using Regex
body: <p>If I want to match only <code>fileName</code>, i.e,</p>
  
  <p>in <code>C://Directory/FileName.cs</code>, somehow ignore everything before <code>FileName.cs</code> using Regex.</p>
  
  <p>How can I do it?</p>
  
  <p>I need this for a Compiled UI I am working on ... can't use programming language as it only accepts Regex.</p>
  
  <p>Any ideas?</p>