title: RegexStringValidator validation in MVC3 model properties
body: <p>I am trying to use a <code>RegexStringValidator</code> on a couple of properties:</p>
  
  <pre><code>[Required, StringLength(4, MinimumLength = 4), RegexStringValidator(@"AAAA")]
  public virtual string ValueGuid { get; set; }
  </code></pre>
  
  <p>This actually accepts anything that is 4 characters long and not just "AAAA" which I would expect. Is there some magic I'm missing here?</p>
  
  <p>Thanks
  Anton</p>