title: How to check if propery exist in HttpContext
body: <p>I have the following code which tries to read user related saved data:</p>
  
  <pre><code> res = HttpContext.Current.Profile.GetPropertyValue(properyName)
  </code></pre>
  
  <p>When there is no property it defined with properyName, an exception is thrown.
  Is there a way to check if this property is defined without this exception?</p>
  
  <p>Thanks</p>