Blazor Server App Authorize Attribute in Data Service does not work - authorization

Question

I have a .NET6 Blazor Server app that has a data service as follows. I thought the [Authorize] attribute will work on it just like it works in controllers. But apparently it does not. Is it possible to use [Authorize] here? How should I implement authorization in this case?
namespace Clinic.Models
{
public interface IData
{
public Task<List<Doctor>> GetAllDoctorsAsync();
public Task<List<Patient>> GetAllPatientsAsync();
}
[Authorize]
public class DataService : IData
{
private readonly IServiceScopeFactory _scopeFactory;
public DataService(IServiceScopeFactory serviceScopeFactory)
{
_scopeFactory = serviceScopeFactory;
}
public async Task<List<Doctor>> GetAllDoctorsAsync()
{
List<Doctor> docs = new List<Doctor>();
using (var scope = _scopeFactory.CreateScope())
{
var context = scope.ServiceProvider.GetRequiredService<ApplicationDbContext>();
docs = await context.Doctors.AsNoTracking().ToListAsync();
context.ChangeTracker.Clear();
}
return docs;
}
[Authorize]
public async Task<List<Patient>> GetAllPatientsAsync()
{
List<Patient> patients = new List<Patient>();
using (var scope = _scopeFactory.CreateScope())
{
var context = scope.ServiceProvider.GetRequiredService<ApplicationDbContext>();
context.ChangeTracker.Clear();
patients = await context.Patients
.Include(d => d.Doctor) //get related data as well. primary doc data
.Include(d => d.SecondaryDoctors) //get related data as well.
.AsNoTracking()
.OrderByDescending(d => d.PatientId)
.ToListAsync();
}
return patients;
}
}
}