title: Downloading a file through Form Submit, want an callback for failure
body: <p>I need to export tables from database to generate a Excel file so the user can download. I am currently using the plain form submit with hidden iframe, and the endpoint generates a response that contains Content-Disposition.</p>
  
  <p>But, I need to display a message to user if server is fails to generate excel file is or any Server-side Error / Exception occurs.  </p>
  
  <p>I switched to use Jquery form plugin. While it does give me the response body, but it won't trigger the Save.</p>
  
  <p>Are there any other alternatives to it ? </p>