title: Multiple regex options with C# Regex
body: <p>Assume I have this: </p>
  
  <pre><code>Regex.Replace("aa cc bbbb","aa cc","",RegexOptions.IgnoreCase);
  </code></pre>
  
  <p>But I also need to ignore white-spaces. So, I found an option <code>IgnorePatternWhitespace</code>, but how can I add several options to one regex.Replace?<br>
  Something like:   </p>
  
  <pre><code>Regex.Replace("aa cc bbbb", "aa cc", "", 
      RegexOptions.IgnoreCase + RegexOptions.IgnorePatterWhitespace);
  </code></pre>
  
  <p><strong>Update:</strong><br>
  Thanks for answers but this option does not seem to work: here's a test example:</p>
  
  <pre><code>Regex.Replace("aa cc bbbb", "aacc", "", 
      RegexOptions.IgnoreCase | RegexOptions.IgnorePatterWhitespace);
  </code></pre>