Handle user Id from Identity
<p>I use this code to get the ID of an user that is logged in:</p>

<pre><code>var userID = User.Identity.GetUserId();
</code></pre>

<p>My thought was to use this as an reference and add it like a integer number to a Customer table, the ID that I get in return, is not like an integer, it's looks like this:</p>

<pre><code>ccc30b4f-2605-4151-8171-d49c30910bdc
</code></pre>

<p>I guess the ID is encrypted, but how should I do to be able to use the ID from a person that is logged in?</p>