How to display the name of the reference in my table AspNetUsers - asp.net-mvc

Question

I am wanting to display the name of the city which I have referenced in my table but I can not AspNetUser how.
This is the IndexViewModels:
public class IndexViewModel {
public bool HasPassword { get; set; }
public IList<UserLoginInfo> Logins { get; set; }
public string PhoneNumber { get; set; }
public bool TwoFactor { get; set; }
public bool BrowserRemembered { get; set; }
public string Nombre { get; set; }
public string Apellido { get; set; }
public string Direccion { get; set; }
public string Pais { get; set; }
public int LocalidadID { get; set; }
public string CodigoPostal { get; set; }
public string Telefono { get; set; }
public virtual Localidad Localidad { get; set; }
}
This is IdentityModels of class ApplicationUser.:
public class ApplicationUser : IdentityUser {
public int LocalidadID { get; set; }
public string Nombre { get; set; }
public string Apellido { get; set; }
public string Direccion { get; set; }
public string Pais { get; set; }
public string CodigoPostal { get; set; }
public string Telefono { get; set; }
public System.DateTime FechaRegistro { get; set; }
// FOREIGN KEY
public virtual Localidad Localidad { get; set; }
public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<ApplicationUser> manager) {
// Note the authenticationType must match the one defined in CookieAuthenticationOptions.AuthenticationType
var userIdentity = await manager.CreateIdentityAsync(this, DefaultAuthenticationTypes.ApplicationCookie);
// Add custom user claims here
return userIdentity;
}
}
This is the controller Index
public async Task<ActionResult> Index(ManageMessageId? message)
{
if (User.Identity.Name.Equals("guest#guest.com"))
return RedirectToAction("GuestIndex");
var manager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(new ApplicationDbContext()));
var store = new UserStore<ApplicationUser>(new ApplicationDbContext());
var ctx = store.Context;
var usuario = manager.FindById(User.Identity.GetUserId());
ApplicationDbContext db = new ApplicationDbContext();
var model = new IndexViewModel
{
HasPassword = HasPassword(),
PhoneNumber = await UserManager.GetPhoneNumberAsync(User.Identity.GetUserId()),
TwoFactor = await UserManager.GetTwoFactorEnabledAsync(User.Identity.GetUserId()),
Logins = await UserManager.GetLoginsAsync(User.Identity.GetUserId()),
BrowserRemembered = await AuthenticationManager.TwoFactorBrowserRememberedAsync(User.Identity.GetUserId()),
Direccion = usuario.Direccion,
Nombre = usuario.Nombre,
Apellido = usuario.Apellido,
Telefono = usuario.Telefono,
LocalidadID = usuario.LocalidadID,
//Localidades = db.Localidades.Where(l => l.LocalidadID==usuario.LocalidadID).Select(l => new {Nombre = l.Nombre}),
CodigoPostal = usuario.CodigoPostal
};
return View(model);
}
And my View i throw me error:
<p>Argentina, #Model.Localidad.Departamento.Provincia.Nombre</p>
Error: Object reference not set to an instance of an object.

Answer 1

The Solution was to add the following line:
Localidad = (from l in db.Localidades where l.LocalidadID == usuario.LocalidadID select l).First<Localidad>()
Leaving the function like this:
public async Task<ActionResult> Index(ManageMessageId? message)
{
if (User.Identity.Name.Equals("guest#guest.com"))
return RedirectToAction("GuestIndex");
var manager = new UserManager<ApplicationUser>(new UserStore<ApplicationUser>(new ApplicationDbContext()));
var store = new UserStore<ApplicationUser>(new ApplicationDbContext());
var ctx = store.Context;
var usuario = manager.FindById(User.Identity.GetUserId());
ApplicationDbContext db = new ApplicationDbContext();
var model = new IndexViewModel
{
HasPassword = HasPassword(),
PhoneNumber = await UserManager.GetPhoneNumberAsync(User.Identity.GetUserId()),
TwoFactor = await UserManager.GetTwoFactorEnabledAsync(User.Identity.GetUserId()),
Logins = await UserManager.GetLoginsAsync(User.Identity.GetUserId()),
BrowserRemembered = await AuthenticationManager.TwoFactorBrowserRememberedAsync(User.Identity.GetUserId()),
Direccion = usuario.Direccion,
Nombre = usuario.Nombre,
Apellido = usuario.Apellido,
Telefono = usuario.Telefono,
LocalidadID = usuario.LocalidadID,
Localidad = (from l in db.Localidades where l.LocalidadID == usuario.LocalidadID select l).First<Localidad>(),
CodigoPostal = usuario.CodigoPostal
};
return View(model);
}

Answer 2

The Departamento.Provincia of the Localidad won't be loaded, and maybe the Localidad itself.
You have to load it from the context by using Include or load it explicitly in another query
ex:
LocalidadID = db.Localidads.Include("Departamento.Provincia.").Where(a=>a.LocalidadId == usuario .LocalidadID)