title: Is it possible to have an ampersand sign in an appSettings key? error: web.config value is not defined
body: <p>I have the following appSettings section</p>
  
  <pre><code>&lt;appSettings&gt;
    &lt;add key="Foo" value="http://foo.bar.com/?app=xxx&amp;FormName=yyy" /&gt;
  &lt;/appSettings&gt;
  </code></pre>
  
  <p>But the IDE is giving me two errors:</p>
  
  <ol>
  <li>Error   25  Entity 'FormName' not defined.  </li>
  <li>Error   26  Expecting ';'.  </li>
  </ol>
  
  <p>It seems the <strong>&amp;</strong> is causing a problem.  I'd like to not have to splt the values up into seperate keys.  Is there an elegant way around this issue?</p>