title: Strange parsing error
body: <pre><code>&lt;asp:HiddenField ID="hidden&lt;%# Eval("WeekNo") %&gt;" Value="hidden" runat="server" /&gt;
  </code></pre>
  
  <p>gives me: </p>
  
  <blockquote>
    <p>Parser Error Message: The server tag is not well formed.</p>
  </blockquote>
  
  <p>Anyone who can tell me why?</p>