title: Silverlight, "The type or namespace name 'CookieContainer' does not exist in the namespace 'System.Net'"
body: <p>I'm running VS2010 pro, <a href="http://blogs.msdn.com/b/swiss_dpe_team/archive/2008/03/17/silverlight-2-beta1-wcf-linq-to-sql-a-powerfull-combination.aspx" rel="nofollow noreferrer">and I downloaded a sample Silverlight app</a> written in an older version.  I did the conversion but now when I go to run it, I get this error.  I searched the net, the only recommendation I found was to add a reference to "System.Net" (which didn't make sense, but I did anyway), but this didn't help.  The offending code:</p>
  
  <pre><code>public System.Net.CookieContainer CookieContainer {...
  </code></pre>