Amstelsus Amstelsus - 1 year ago 100
C# Question

Extra column on user-roles table when using custom identity user(ASP.NET 5.2EF 6 and Identity 2)

I'm using a 4-layer based architecture for my MVC app : Domain,Data,Service and MVC.
In my domain layer , i've created an Employee class inheriting from IdentityUser. It contain custom properties and the GenerateUserIdentityAsync method i've got from the application user class in identitymodes in MVC.

public class Employee : IdentityUser
public async Task<ClaimsIdentity> GenerateUserIdentityAsync(UserManager<Employee> 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;
public String CIN { get; set; }
public String FirstName { get; set; }

In my data layer, i've created a context inheriting from IdentityDbContext . I don't mention employee in my dbsets. I've also added numerous regarding my application and especially the employee class.

public class MyCWCContexte : IdentityDbContext<Employee>
public MyCWCContexte()
: base("name=CWCDB")


protected override void OnModelCreating(DbModelBuilder modelBuilder)

The last change i've done is that i've changed the StartUp.Auth.cs and IdentityConfig files so they match my Employee class and my context.

public class ApplicationUserManager : UserManager<CWC.Domain.Entities.Employee>
public ApplicationUserManager(IUserStore<CWC.Domain.Entities.Employee> store)
: base(store)

public static ApplicationUserManager Create(IdentityFactoryOptions<ApplicationUserManager> options, IOwinContext context)
var manager = new ApplicationUserManager(new UserStore<CWC.Domain.Entities.Employee>(context.Get<MyCWCContexte>()));
// Configure validation logic for usernames
manager.UserValidator = new UserValidator<CWC.Domain.Entities.Employee>(manager)
AllowOnlyAlphanumericUserNames = false,
RequireUniqueEmail = true

Generating the database from migrations goes well, the problem is with aspnet auto-generated tables, from IdentityUserRole class for example. When trying to add an user and adding a role to it, i've seen that aspnetuserroles contains 3 columns as stated here :

Screenshot of select * from aspnetuserroles
UserId and RoleId are the PKs of the table, and Employee_Id is a FK from Employee. I think that UserId should be the Fk instead.
It's really a problem since Authorizate annotation and GetRoles from usermanager for example don't work well. UserManager.GetRoles(Employee.Id) always returns null and the Employee.Id I get has the correct value i've got from database.
I think it's because the comparaison is made on the employee_id instead of the userid.
Do you have an idea about this ?I'm a beginner in ASP.NET. Thank you in advance.

Answer Source

Corrected it with removing the genericity(Employee) from DbContext : IdentityDbContext My context now is : public class MyCWCContexte : IdentityDbContext

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