title: flex - check image dimensions before upload using filereference
body: <p>In my Flex application, I use a <code>FileReferenceList</code> that the user can populate with multiple files using <code>fileList.browse()</code> before upload.</p>
  
  <p>I check each file's size and use <code>fileList[i].upload()</code> to upload to my server, this works fine.</p>
  
  <p>I have a suspicion that this is not possible, but before upload I would like to convert each <code>FileReference</code> into an Image in order to check it lies within certain dimension tolerances.</p>
  
  <p>I realise I can do this server side, but ideally I would like the check to appear on both client and server. Can anyone offer any help?</p>
  
  <p>Thanks!</p>