title: Can't find control using FindControl
body: <p>Having trouble getting find control to find something, but it's returning null when the control does exist.</p>
  
  <p>It's being called on an <code>asp:button click</code> (and no fields have display dynamic on them). The controls are labels, and have runat server e.t.c. I'm using Umbraco, was thinking going <code>Page.FindControl</code> might not work /w umbraco because it uses master pages? Here's the code:</p>
  
  <pre><code>&lt;asp:Label ID="Reg_Name_Error" CssClass="error" runat="server" /&gt;
  
  if (Page.FindControl("Reg_Name_Error") != null) { }
  </code></pre>