title: Changing password asp.net identity
body: <p>Is there a quick way to verify is user exists and based on existence of user name get user id?</p>
  
  <p>(i.e. the user only has the user name and the adds it to change their password)?</p>
  
  <p>I would think something like this... <code>String userId = User.Identity.GetUserId(userName);</code></p>
  
  <p>I am looking for a quick way for local users to change their password if need be.</p>