title: c# regex: get all uri's, but not from a specific domain
body: <p>i have a c# regex, which gives me all uri's in a document.
  it's this:</p>
  
  <pre><code>&lt;a[^&gt;]*\shref=[\""\'][^&gt;]*"
  </code></pre>
  
  <p>this one works, but i want to exclude al uri's (matches) which have the word 'doubleclick.net' in it, because those uri's i want to leave untouched, and the others i want to add some code to.</p>
  
  <p>i've tried this:
      ((?!doubleclick.net).) somewhere in between
  found here
  <a href="http://bloggingabout.net/blogs/arjen/archive/2008/12/03/regex-exclude-lines-containing-a-specific-word.aspx" rel="nofollow noreferrer">http://bloggingabout.net/blogs/arjen/archive/2008/12/03/regex-exclude-lines-containing-a-specific-word.aspx</a>
  but it doesn't work for me....</p>
  
  <p>Michel</p>