title: Providing a non-constant value in RangeAttribute?
body: <p>When I do the following:</p>
  
  <pre><code>`[Range(1910, DateTime.Now.Year)]  
  public int Year { get; set; }`
  </code></pre>
  
  <p>I get the following error:</p>
  
  <p><code>An attribute argument must be a constant expression, typeof expression or array creation expression of an attribute parameter type</code></p>
  
  <p>Any ideas why?</p>