Get the current user, within an ApiController action, without passing the userID as a parameter

Question

How do we get the current user, within an secure ApiController action, without passing the userName or userId as a parameter?

We assume that this is available, beca

Answer 1

Karan Bhandari's answer is good, but the AccountController added in a project is very likely a Mvc.Controller. To convert his answer for use in an ApiController change HttpContext.Current.GetOwinContext() to Request.GetOwinContext() and make sure you have added the following 2 using statements:

using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.Owin;