Dependency injection fails for .Net Core 2.1 customized IdentityUI

Question

The new .Net Core 2.1 Identity is very confusing.

Here is my code:

STARTUP.CS

services.AddIdentity<User, IdentityRole>(options => options.Stores.MaxLengthForKeys = 128)
        .AddEntityFrameworkStores<ApplicationDbContext>() 
        .AddDefaultUI()
        .AddDefaultTokenProviders();

DBCONTEXT

public class ApplicationDbContext : IdentityDbContext<User>
{
    public ApplicationDbContext(DbContextOptions<ApplicationDbContext> options)
        : base(options)
    {
    }
}

But I got this error:

InvalidOperationException: No service for type 'Microsoft.AspNetCore.Identity.UserManager`1[Microsoft.AspNetCore.Identity.IdentityUser]' has been registered.

What I'm doing wrong?

Answer 1

User has been registered with Identity Framework as the extended user identity model.

However, the exception message implies that somewhere in the project has a class dependent on UserManager<IdentityUser> , which would have been the default from the template.

Since the default has been extended, then where ever there is reference to the default UserManager<IdentityUser> would need to be updated to UserManager<User>