Issue with trying to use multiple identities .net core 5.0

BBK_Developer 26

Hi everyone,

I am new to asp.net core and i started working on asp.net from version 5.0 core. I have switched to asp.net from laravel php framework. This was my brief introduction. I have been working on asp.net and using database first approach i built dbcontext and implemented my whole system in asp.net but in start i wanted to use identity scaffolding and use all commands that added a new identitydbcontext. So i have now two dbcontext one is asp.net core default with only identity and other is my database from db first approach.

I have implemented the default identity system by using

services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = false)
                .AddRoles<IdentityRole>()
                .AddEntityFrameworkStores<ApplicationDbContext>();

But after this i wanted to authenticate users against a custom model tblemployee with fields i.e phone and scale. But when i try to add this by using a method that I found here Asp.net core 2.0 multiple identity .

My code to do that is

services.AddIdentityCore<TblEmployee>().AddEntityFrameworkStores<DbBzuCCContext>().AddDefaultTokenProviders();

But the code is not working it says that extend from IdentityUser but i can't use identityuser fields in my model. I just want to use my 2 fields to work as additional identity provider. Is there any way in middle ware to change default route for different identity and all my previous controllers to be used from default identity but new one with other identity.

Any help will be highly appreciated.

Regards,

Zhi Lv - MSFT 32,146 Reputation points Microsoft Vendor

2021-12-23T06:02:01.943+00:00
Hi @BBK_Developer ,

i have now two dbcontext one is asp.net core default with only identity and other is my database from db first approach.

From your description, you are using two dbcontext: IdenittyDbContext and the dbFirstDbcontext, whether they are using the same database or different database? And which database does the tblemployee table belong to?

Based on my understanding, the IdentityDbContext is used with the Identity, and the dbFirstDbcontext not. In this scenario, there is no need to configure Identity with dbFirstDbContext. The ConfigureServices method should be like this:

// this is for the Identity DB context: configure the database, and the Identity. services.AddDbContext<IdentityDbContext>(options => // options.UseSqlite( options.UseSqlServer( Configuration.GetConnectionString("DefaultConnection"))); services.AddDatabaseDeveloperPageExceptionFilter(); services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = true) .AddEntityFrameworkStores<IdentityDbContext>(); // the following is the dbFirstDbcontext services.AddDbContext<dbFirstDbcontext>(options => options.UseSqlServer(Configuration.GetConnectionString("dbFirstDbconnection")));

Then, if you want to use Identity you can call the IdentityDbContext, if you want to access dbFirstDb database's table, you consume the dbFirstDbcontext.

Refer to Entity Framework Core in ASP.NET Core.

Best regards,
Dillion
BBK_Developer 26 Reputation points

2022-01-03T06:39:11.367+00:00

Yes sir thanks for reply and your understand is right i have two db context tblemployee is in dbfirstcontext and other identitydbcontext is added by using ef core scaffolding. Now Tblemployee has two fields one is phone and other is name. I want to autheticated users against the default identityuser as well as my custom model tblemployee. How i can i work both simultaneously auth providers.
BBK_Developer 26 Reputation points

2022-01-03T06:53:15.293+00:00

@Zhi Lv - MSFT basically my purpose is to use multiple authentication like one for admin using default email and password of microsoft identity. Other i want to use if for clients using tblemployee table fields.
Zhi Lv - MSFT 32,146 Reputation points Microsoft Vendor

2022-01-05T07:55:01.223+00:00
Hi @BBK_Developer ,

You can try to use the following methods:

Using the scaffolding Identity generate login page, after validate the user using the Identity, you can also inject the dbfirstcontext and use it to validate the tblemployee. After validating success, you can Sign In the application use the account. You can refer to the Introduction to Identity on ASP.NET Core

Create the Account controller to login user, in the login method, validate the user twice using the dbfirstcontext and identitydbcontext. After validate success, store the identity information to the cookie. you can refer the Cookie Authentication In ASP.NET Core. Or you can add the custom claims for the user. And then, create a custom middleware/Authorize attribute to validate each request and check whether the current user contains the claims or not. You can refer to the following links: Custom Authorization attributes and How To Override Attribute Class To Do Custom Authorization In .NET Core.

Best regards,
Dillion
BBK_Developer 26 Reputation points

2022-01-07T05:26:59.003+00:00

@Zhi Lv - MSFT Really very thankful for your precious time and help. Still let me explain again my issue. Yes default identity is working and all good now set this aside.

I want to make another URL where a person comes and enter their phone number and some code. After all this this person should go to some other dashboard with a kind of role or something like that and the person with that default identity should go to other areas of application this is all i desire very normal in php core or laravel but here i am quite now that's why confused as this is compiled language i really like it's feature my friend and want to customize this fully to my needs. Sorry again as i am new i might not be asking right questions.

Accepted answer

AgaveJoe 28,031 Reputation points

2022-01-07T18:43:07.01+00:00

The authentication cookie middleware handles authorization in .NET Core. Simply create an authentication cookie and the roles/claims needed for authorization when the user successfully authenticates on the other URL.

Use cookie authentication without ASP.NET Core Identity
Role-based authorization in ASP.NET Core
Claims-based authorization in ASP.NET Core
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BBK_Developer 26 Reputation points

2022-01-31T08:13:06.807+00:00

Can i use both authentication i.e cookie based authentication / asp.net identity authentication. I have two kind of users one is super admin and administration that will use default email / password login.....

2nd kind of users want to login with phone and number these two fields are not part of asp.net identity dbcontext ...... I hope now i am clear what i desire. Thanks for helping me. I shall be very thankful if you help me specifically what i am expecting. After both user login i want them to be able to access different url after login and also restrict them to access other routes that is being used by default identity configuration.

AgaveJoe 28,031 Reputation points

2022-01-31T13:07:39.493+00:00

Again, Identity uses the authentication cookie middleware. The authentication cookie middleware drives the claims and role based authorization in ASP.NET Core. It is up to you to populate the claim/roles for the custom login and apply appropriate claims and/or role based authorization.

Please read the docs in my initial post.

BBK_Developer 26 Reputation points

2022-02-01T09:00:28.32+00:00

Really thank ful now done with custom auth and that is working but now default identity is not working this is my startup.cs line added

services.AddDefaultIdentity<IdentityUser>(options => options.SignIn.RequireConfirmedAccount = false) .AddRoles<IdentityRole>() .AddEntityFrameworkStores<ApplicationDbContext>(); services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme) .AddCookie();
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