title: Access Query string parameters with no values in ASP.NET
body: <p>I am trying to set up a page that has two behaviors. I'm separating them by URL: One behavior is accessed via <code>/some-controller/some-action</code>, the other is via <code>/some-controller/some-action?customize</code>. </p>
  
  <p>It doesn't look like the Request.QueryString object contains anything, though, when I visit the second URL...I mean, the keys collection has one element in it, but it's <code>null</code>, not <code>'customize'</code>. Anyone have any ideas about this or how to enable this. I'd like to avoid manually parsing the query string at all costs :).</p>