title: Custom authorization annotation with custom login page and how to to store the user?
body: <p>I want to create a custom Authorization annotation like this article
  <a href="http://www.c-sharpcorner.com/UploadFile/56fb14/custom-authorization-in-mvc/" rel="nofollow noreferrer">http://www.c-sharpcorner.com/UploadFile/56fb14/custom-authorization-in-mvc/</a></p>
  
  <p>But my question is how to redirect unauthorized/unauthenticated user to a specific login page and how to store the user information for the custom authorization?</p>