Question

In ASP.NET MVC 4, what’s the difference between User.Identity.Name and WebSecurity.CurrentUserName? Can I use them interchangeably?

Answer 1

Courtesy of Reflector:

public static class WebSecurity
{
    ...

    public static string CurrentUserName
    {
        get
        {
            return Context.User.Identity.Name;
        }
    }

    ...
}     

So let’s answer your questions:

what’s the difference between User.Identity.Name and WebSecurity.CurrentUserName?

None.

Can I use them interchangeably?

Yes.