title: Monotouch: How to update a textfield in AppDelegate partial class?
body: <p>I have a textfield (created using IB) that has an outlet connected to App Delegate.  Accessability is enabled.</p>
  
  <p>I have a class for IAP, where I need to update that textfield.  It is not visible from my code.</p>
  
  <p>How do I do this?</p>