title: Validation Summary not picking up Error Message in group
body: <p>I have several required fields and regex's on my form. The validation is fired on a button click. When the button is clicked, the error messages are showing where the <code>asp:RequiredField</code> are declared and not in the validation summary. Here is my code:</p>
  
  <p>Validation Summary:</p>
  
  <pre><code>&lt;asp:ValidationSummary id="mySummary" DisplayMode="List" HeaderText="Error:" EnableClientScript="true" ShowSummary="true" runat="server" ValidationGroup="valGroup" /&gt;
  </code></pre>
  
  <p>Required Fields/Regex:</p>
  
  <pre><code>&lt;!-- Required --&gt;
  &lt;asp:RequiredFieldValidator ID="reqField1" ControlToValidate="txtSomething" ErrorMessage="Something is required" runat="server" Display="Static" InitialValue="" ValidationGroup="valGroup" /&gt;
  &lt;!-- Regex --&gt;
  &lt;asp:RegularExpressionValidator runat="server" id="regexField1" ControlToValidate="txtSomething" 
      ErrorMessage="Something in the wrong format."  ValidationExpression="^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$" ValidationGroup="valGroup"&gt;
  &lt;/asp:RegularExpressionValidator&gt;
  </code></pre>
  
  <p>Button:</p>
  
  <pre><code>&lt;asp:LinkButton ID="btnValidate" runat="server" CausesValidation="True" ValidationGroup="valGroup" &gt;Validate&lt;/asp:LinkButton&gt;
  </code></pre>
  
  <p>Any suggestions?</p>