title: How can I determine if at least one radio button inside a groupbox is checked?
body: <p>For example:</p>
  
  <p>I have <code>radiobutton1</code>, and <code>radiobutton2</code>, both in the <code>groupbox1</code>.
  I also have <code>radiobutton3</code> and <code>radiobutton4</code>, in <code>groupbox2</code>.</p>
  
  <p>Is it possible to take action if at least <code>radiobutton1</code> or <code>radiobutton2</code> is checked? If it was just two radio buttons it would be simple, but I have around 200 radio buttons across 30 groupboxes.</p>