title: How to handle the parsing of nested quantifier?
body: <p>I have my code as</p>
  
  <pre><code>Regex regExValue = new Regex(cirtText.Properties.Mask.EditMask);
  </code></pre>
  
  <p>but i get an exception as</p>
  
  <blockquote>
    <p>Message : parsing
    "((www).([a-zA-Z0-9]{1,6}+.+)*[a-zA-Z]{2,6})"
    - Nested quantifier +.</p>
  </blockquote>
  
  <p>can anyone let me know the solution?</p>