Windows Form Login using ASP.NET MVC 5 Identity

First of all I have to say that I'm beginner with asp.net, MVC 5 and Web Applications. I'm developing a web application with MVC 5, with a little database (using Code First) and Identity to user authentication. I have extended ApplicationUser class with more properties and I can register new users with this new information from the web.

In the other hand I have a Windows Forms application. In this application I have to login with user and password to get the extended information.

I need how to do this or know the best practices to this situation.

I have found this topic Windows Form Login using ASP.NET MVC 4 Membership but is older version, I think there would be a solution to MVC 5 Identity.

Thanks in advance.