CODEWITHSUNDEEP
c#authenticationasp.net-coreasp.net-core-mvc
Stanislav Balia
Stanislav Balia

Reputation: 385

Is it possible to turn on Authentication in empty ASP.NET Core Mvc project?

I'm stuck in authentication in my project. I created asp.net mvc project without authentication. I have existing database. I added db by executing: Scaffold-Dbcontext and use this in Startup.cs(ConfigureServices method): 

services.AddEntityFrameworkSqlServer().AddDbContext<AppContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("SqlDb")));

For Identity i added this in ConfigureServices:

services.AddIdentity<IdentityUser, IdentityRole>()
                .AddEntityFrameworkStores<AppContext>()
                .AddDefaultTokenProviders();

and this in Configure:

app.UseAuthentication();

I have next controller:

 private readonly UserManager<IdentityUser> _userManager;
        private readonly SignInManager<IdentityUser> _signInManager;
        private readonly AppContext _context;
        public HomeController(UserManager<IdentityUser> userManager, SignInManager<IdentityUser> signInManager, AppContext context)
        {
            this._userManager = userManager;
            this._signInManager = signInManager;
            _context = context;
        }

And when i try to find user by id: var usr = _userManager.FindByIdAsync(user.Id); App throw this exception :System.InvalidOperationException: 'Cannot create a DbSet for 'IdentityUser' because this type is not included in the model for the context.' Change inherit in context to IdentityDbContext throw 3 new exceptions, one of them is :

'App.Chat.Identity.ApplicationUser' cannot be used as type parameter 'TUser' in the generic type or method 'IdentityDbContext<TUser>'. There is no implicit reference conversion from 'App.Chat.Identity.ApplicationUser' to 'Microsoft.AspNet.Identity.EntityFramework.IdentityUser'.

Can someone explain how to use authentication in empty project? Or i need to recreate project with individual auth? (Second varian will hurt me).

Edit #1 Here is additional info:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Identity;

namespace App.Chat.Identity
{
    public class ApplicationUser : IdentityUser
    {
    }
}

And startup info:

services.AddEntityFrameworkSqlServer().AddDbContext<AppContext>(options =>
                options.UseSqlServer(Configuration.GetConnectionString("SqlDb")));
services.AddIdentity<ApplicationUser, IdentityRole>()
                .AddEntityFrameworkStores<AppContext>()
                .AddDefaultTokenProviders();

Edit #2 My AppContext:

using System;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Metadata;
using App.Chat.Identity;
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;


namespace App.Chat.TModels
{
    public partial class AppContext : IdentityDbContext<ApplicationUser>
    {
public AppContext(DbContextOptions<AppContext> options)
    : base(options)
        { }
}

Upvotes: 2

Views: 900

Answers (2)

Igor
Igor

Reputation: 308

Like Kahbazi suggested change name. And check these 2 classes.

 //change in startup.
//services.AddEntityFrameworkSqlServer().AddDbContext<ApplicationDbContext>(options =>


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

    protected override void OnModelCreating(ModelBuilder builder)
    {
        base.OnModelCreating(builder);
        // Customize the ASP.NET Identity model and override the defaults if needed.
        // For example, you can rename the ASP.NET Identity table names and more.
        // Add your customizations after calling base.OnModelCreating(builder);
    }
}

public class ApplicationUser : IdentityUser
{
}

 public class HomeController
{
    private readonly UserManager<IdentityUser> _userManager;
    private readonly SignInManager<IdentityUser> _signInManager;
    private readonly ApplicationDbContext _context;
    public HomeController(UserManager<IdentityUser> userManager, SignInManager<IdentityUser> signInManager, ApplicationDbContext context)
    {
        this._userManager = userManager;
        this._signInManager = signInManager;
        _context = context;
    }
}

Upvotes: 1

Kahbazi
Kahbazi

Reputation: 15015

Your error says Microsoft.AspNet.Identity.EntityFramework.IdentityUser which is not a ASP.NET Core package. It's for the old framework.

Check your nuget packages and uninstall Microsoft.AspNet.Identity.EntityFramework and Microsoft.AspNet.Identity.Core

Upvotes: 1

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