Getting InvalidOperationException after conversion from .NET 2 to .NET 3.0

Question

I upgraded my .NET 2.0 web application from .NET 3.0. It now compiles but when I try to login I am getting error "InvalidOperationException: Cannot create a DbSet for 'ApplicationUser' because this type is not included in the model for the context". Obviously the call to database cannot be done but I can't see what my error is.

I got this in Startup.cs (ConfigureServices)

services.AddDbContext<ApplicationDbContext>(options =>
  options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));


   services.AddDefaultIdentity<ApplicationUser>()
        .AddEntityFrameworkStores<ApplicationDbContext>()
        .AddDefaultTokenProviders();

Here is my ApplicationDBContext.cs:

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

        protected override void OnModelCreating(ModelBuilder builder)
        {
            base.OnModelCreating(builder);
        }
    }

The error stack reads like this:

Microsoft.EntityFrameworkCore.Internal.InternalDbSet.get_EntityType() Microsoft.EntityFrameworkCore.Internal.InternalDbSet.CheckState() Microsoft.EntityFrameworkCore.Internal.InternalDbSet.get_EntityQueryable() Microsoft.EntityFrameworkCore.Internal.InternalDbSet.System.Linq.IQueryable.get_Provider() Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ExecuteAsync(MethodInfo operatorMethodInfo, IQueryable source, Expression expression, CancellationToken cancellationToken) Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.ExecuteAsync(MethodInfo operatorMethodInfo, IQueryable source, LambdaExpression expression, CancellationToken cancellationToken) Microsoft.EntityFrameworkCore.EntityFrameworkQueryableExtensions.FirstOrDefaultAsync(IQueryable source, Expression> predicate, CancellationToken cancellationToken) Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserOnlyStore.FindByNameAsync(string normalizedUserName, CancellationToken cancellationToken) Microsoft.AspNetCore.Identity.UserManager.FindByNameAsync(string userName) Microsoft.AspNetCore.Identity.SignInManager.PasswordSignInAsync(string userName, string password, bool isPersistent, bool lockoutOnFailure) ImSmart.Controllers.AccountController.Login(LoginViewModel model, string returnUrl) in AccountController.cs + var result = await _signInManager.PasswordSignInAsync(model.Email, model.Password, false, lockoutOnFailure: true); Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor+TaskOfIActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, object controller, object[] arguments)

What might I be missing?

pdube pdube · Accepted Answer · 2019-04-04T00:30:04

Finally the answer was to go back to IdentityUser instead of ApplicationUser. That meant I also had to change everywhere in code where I used SignInManager<ApplicationUser> and UserManager<ApplicationUser> to SignInManager<IdentityUser> and UserManager<IdentityUser>.

After these changes, login works fine.

Getting InvalidOperationException after conversion from .NET 2 to .NET 3.0

1 Answers