ASP.NET Core 2.1 Role Manager Register

Question

In my seeding code I create Users and Roles, and the error seems to be whenever I run it through startup I seem to be getting

\"No service for type

Answer 1

You haven't registered the role services in the DI container. This line:

services.AddDefaultIdentity<AppUser>()
    .AddEntityFrameworkStores<ApplicationDbContext>();

Needs to change to include them by using the AddRoles method. Assuming you are using the default IdentityRole class:

services.AddDefaultIdentity<AppUser>()
    .AddRoles<IdentityRole>()
    .AddEntityFrameworkStores<ApplicationDbContext>();