title: ASP.NET Conditional Markup Rendering According to Web.config Key
body: <p>I have a key in web.config as -</p>
  
  <pre><code>&lt;add key="IsDemo" value ="true"/&gt;
  </code></pre>
  
  <p>I want to show/hide markup based on above web.config entry for a <strong>non-server html tag</strong> without using code behind file (as there is no .cs file and there are no runat=server controls).
  Something similar to following pseudo code:</p>
  
  <pre><code>IF ( IsDemo == "true" )
  THEN
  &lt;tr&gt;
      &lt;td id="tdDemoSection" colspan="2" align="left" valign="top"&gt;
          &lt;.....&gt;
      &lt;/td&gt;
  &lt;/tr&gt;
  ENDIF
  </code></pre>
  
  <p>Does anyone know that we can write such conditional logic in .aspx markup? 
  Please help!!!</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>Section I'm hiding or showing have some data like username and password. So, I do not want user to use Firebug or Web Developer Tools to see hidden markup. markup should not go to client side.</p>