asp.net core authentication with IdentityDbContext<AppUser, AppRole, int, AppUserClaim, AppUserRole, AppUserLogin, AppRoleClaim, AppUserToken>

Question

I am trying to create database from Code first model. When I run dotnet ef migrations add or debug application I get error:

TypeLoadException: GenericArguments[0], 'OpPISWeb.Models.AppUser', on 'Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserStore`9[TUser,TRole,TContext,TKey,TUserClaim,TUserRole,TUserLogin,TUserToken,TRoleClaim]' violates the constraint of type parameter 'TUser'.
System.RuntimeTypeHandle.Instantiate(RuntimeTypeHandle handle, IntPtr* pInst, int numGenericArgs, ObjectHandleOnStack type)

in code:

.AddEntityFrameworkStores<AppWebContext, int>()

My code in ConfigureServices is:

        var res = services
            .AddIdentity<AppUser, AppRole>(config =>
            {
                config.User.RequireUniqueEmail = true;
                config.Password.RequireNonAlphanumeric = false;
                config.Cookies.ApplicationCookie.AutomaticChallenge = false;
            })
        .AddEntityFrameworkStores<AppWebContext, int>()
        .AddDefaultTokenProviders();

and my EF models are:

[Table("Roles")]
public partial class AppRole : IdentityRole<int, AppUserRole, AppRoleClaim>
{
}
[Table("RoleClaims")]
public partial class AppRoleClaim : IdentityRoleClaim<int>
{
}
[Table("Users")]
public partial class AppUser : IdentityUser<int, AppUserClaim, AppUserRole, AppUserLogin>
{
}

//same for UserClaim, UserLogin, UserRole, UserToken

and my DBContext:

public partial class AppWebContext : IdentityDbContext<AppUser, AppRole, int, AppUserClaim, AppUserRole, AppUserLogin, AppRoleClaim, AppUserToken>
{

    public AppWebContext() : base() {
    }

    protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
    {
        optionsBuilder.UseSqlServer(@"Server=...");
    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        base.OnModelCreating(modelBuilder);

        modelBuilder.Entity<AppUser>(entity =>
        {
            entity
            .HasKey(u => u.Id);
            entity.Property(p => p.Id)
            .ValueGeneratedOnAdd();
        });

        modelBuilder.Entity<AppRole>(entity =>
        {
            entity
            .HasKey(u => u.Id);
            entity.Property(p => p.Id)
            .ValueGeneratedOnAdd();
        });

        modelBuilder.Entity<AppUserClaim>(entity =>
        {
            entity
            .HasKey(u => u.Id);
            entity.Property(p => p.Id)
            .ValueGeneratedOnAdd();
        });

        modelBuilder.Entity<AppUserRole>(entity =>
        {
            entity
            .HasKey(u => new { u.RoleId, u.UserId });
        });

        modelBuilder.Entity<AppRoleClaim>(entity =>
        {
            entity
            .HasKey(u => u.Id);
            entity.Property(p => p.Id)
            .ValueGeneratedOnAdd();
        });
    }
}

What did I miss? I am new in ASP.net and ASP.NET Core.
I am using version 1.1.

Complete error:

An error occurred while starting the application.

TypeLoadException: GenericArguments[0], 'OpPISWeb.Models.AppUser', on 'Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserStore`9[TUser,TRole,TContext,TKey,TUserClaim,TUserRole,TUserLogin,TUserToken,TRoleClaim]' violates the constraint of type parameter 'TUser'.
System.RuntimeTypeHandle.Instantiate(RuntimeTypeHandle handle, IntPtr* pInst, int numGenericArgs, ObjectHandleOnStack type)

ArgumentException: GenericArguments[0], 'OpPISWeb.Models.AppUser', on 'Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserStore`4[TUser,TRole,TContext,TKey]' violates the constraint of type 'TUser'.
System.RuntimeType.ValidateGenericArguments(MemberInfo definition, RuntimeType[] genericArguments, Exception e)

TypeLoadException: GenericArguments[0], 'OpPISWeb.Models.AppUser', on 'Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserStore`9[TUser,TRole,TContext,TKey,TUserClaim,TUserRole,TUserLogin,TUserToken,TRoleClaim]' violates the constraint of type parameter 'TUser'.
System.RuntimeTypeHandle.Instantiate(RuntimeTypeHandle handle, IntPtr* pInst, int numGenericArgs, ObjectHandleOnStack type)
System.RuntimeTypeHandle.Instantiate(Type[] inst)
System.RuntimeType.MakeGenericType(Type[] instantiation)

Show raw exception details
ArgumentException: GenericArguments[0], 'OpPISWeb.Models.AppUser', on 'Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserStore`4[TUser,TRole,TContext,TKey]' violates the constraint of type 'TUser'.
System.RuntimeType.ValidateGenericArguments(MemberInfo definition, RuntimeType[] genericArguments, Exception e)
System.RuntimeType.MakeGenericType(Type[] instantiation)
Microsoft.Extensions.DependencyInjection.IdentityEntityFrameworkBuilderExtensions.GetDefaultServices(Type userType, Type roleType, Type contextType, Type keyType)
Microsoft.Extensions.DependencyInjection.IdentityEntityFrameworkBuilderExtensions.AddEntityFrameworkStores<TContext, TKey>(IdentityBuilder builder)
OpPISWeb.Startup.ConfigureServices(IServiceCollection services)
System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
Microsoft.AspNetCore.Hosting.ConventionBasedStartup.ConfigureServices(IServiceCollection services)
Microsoft.AspNetCore.Hosting.Internal.WebHost.EnsureApplicationServices()
Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()

Show raw exception details
.NET Core X64 v4.1.1.0    |   Microsoft.AspNetCore.Hosting version 1.1.0-rtm-22752    |    Microsoft Windows 10.0.14393    |   Need help? - Yes I do. Please.

Answer 1

When you are customizing ASP.NET Core Identity, you should not use AddEntityFrameworkStores anymore. Because it will override all of your previous settings and customization to default Identity services.

Quote from Github answer here.