title: How to get the selected value from RadioButtonList?
body: <p>I have a RadioButtonList on my page that is populated via Data Binding</p>
  
  <pre><code>&lt;asp:RadioButtonList ID="rb" runat="server"&gt;
  &lt;/asp:RadioButtonList&gt;
  &lt;asp:Button Text="Submit" OnClick="submit" runat="server" /&gt;
  </code></pre>
  
  <p>How do I get the value of the radio button that the user selected in my "submit" method?</p>