title: Implement ASP.NET MVC View Engine for pre-processing
body: <p>I would like to implement a ASP.NET MVC View Engine to perform some pre-processing of the original .aspx/.ascx. file.
  Then, I want to pass the result to the default view engine (typically the WebForm View Engine).</p>
  
  <p>This means, the default View Engine shouldn't read this file from disk, since this is not yet processed. Instead, i would want the View Engine to read the input from an input stream.</p>
  
  <p>Is this possible?
  Should i create a new file extension mapped to this pre-processing view engine?</p>
  
  <p>thx</p>