Proper way to check authentication in razor view?

Hi I was wondering the correct way to check if a user is authenticated in a razor view in 3.1?

I wanted to hide parts of the navigation etc depending on if a user is logged in.. can you just use @User.Identity.IsAuthenticated

or is there a more correct way?

See this post - https://www.nopcommerce.com/boards/t/14063/check-if-logged-in-through-the-rootcshtml-nop-23.aspx

Thanks for letting me know.. I was hoping to just add this to a base model or something like that but im using the nop-template's mega menu so hooking it in without the source is a little crap..

I ended up using this:
EngineContext.Current.Resolve<IPermissionService>().Authorize(StandardPermissionProvider.PublicStoreAllowNavigation)

Hi there,
I found method which is working in 4.30

var isRegisterCustomer = customerService.IsRegistered(workContext.CurrentCustomer);

to have this worked you have to include few lines into your Razor view

@using Nop.Core
@using Nop.Services.Customers

@inject IWorkContext workContext
@inject ICustomerService customerService