How to authorize user who logged in using external login in Asp.Net MVC
<p><strong>Introduction</strong>
I am working with authorization in application, registered users are authorized on role based for some actions/controllers i.e </p>

<pre><code>[Authorize(Roles = "Developer,Admin,User")]
</code></pre>

<p>My question is, What if a user is logged in using external login method like facebook or google, how to authorize him.</p>

<p>What should be or can be done to achieve this, if someone know about that then please do help. Thanks for your time.</p>