Mvc: No service for type 'Microsoft.AspNetCore.Identity.UserManager has been registered. ??

[ermithun]

migrating UserManagement in different class library gives this Error:
No service for type 'Microsoft.AspNetCore.Identity.UserManager has been registered. ??

[javiercn]

@HaoK does this sound familiar to you?

Are you calling AddIdentity in ConfigureServices on Startup.cs?

[ermithun]

Yes
In ConfigureService on Startup.cs i have called

services.AddIdentity`<ApplicationUser,ApplicationRole>`()
            .AddEntityFrameworkStores<ApplicationDbContext>()
            .AddDefaultTokenProviders();

what should i do for this

[HaoK]

Hard to say, can you include the relevant code in the ctor and startup?

[Eilon]

@HaoK any further idea on this?

[HaoK]

My guess is there's a type mismatch somewhere, i.e. asking for UserManager<IdentityUser> instead of UserManager<ApplicationUser> or something along those lines which causes the service not to be found. Without any more relevant code there's nothing we can do other than speculate...

[Eilon]

So it is.

[pettechbytes]

I hope this doesn't reopen this issue, but I can comment and explain what happened (or at least assume). I ran into the same issue and it was because during my testing, I renamed ApplicationUser to my own name (SomethingUser) and then decided to move the class to another class library. The problem was that I left the SomethingUser defined in my web project thus the constructor for the UserManager didn't know which one I was targeting when in my ConfigureServices I identified it as the SomethingUser in my class library. Great hint HaoK, it helped me correct my own issue. It was a type mismatch.

[dmitry-pavlov]

It seems @ermithun you need to take care of scope as it is scoped:

using (var serviceScope = _serviceProvider.GetRequiredService<IServiceScopeFactory>().CreateScope())
{
    var userManager = serviceScope.ServiceProvider.GetService<UserManager<ApplicationUser>>();
}

[light-traveller]

In _LoginPartial.cshtml replace the following:
SignInManager<IdentityUser> and UserManager<IdentityUser>
with:
SignInManager<ApplicationUser> and SignInManager<ApplicationUser>.

[wstaelens]

_LoginPartial.cshtml change to:

@*@inject SignInManager<IdentityUser> SignInManager
  @inject UserManager<IdentityUser> UserManager*@
@inject SignInManager<ApplicationUser> SignInManager
@inject UserManager<ApplicationUser> UserManager

[andersonphiri]

@HaoK I thought if ApplicationUser is deriving IdentityUser the an is-a will work???? but it doesnt, you will have to put the type explicitly

[javiercn]

@andersonphiri That's not the case, you need to have the specific user type for DI purposes

[andersonphiri]

Noted and thanks you. Yes DI workis with specific type

On Fri, Oct 5, 2018 at 2:21 AM Javier Calvarro Nelson <
[email protected]> wrote:

@andersonphiri https://github.com/andersonphiri That's not the case,
you need to have the specific user type for DI purposes

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Institution: University Of Zimbabwe

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[andersonphiri]

Noted and thanks you. Yes DI works with specific type

On Tue, Oct 16, 2018 at 8:20 AM Anderson Phiri [e-mail]
wrote:

Noted and thanks you. Yes DI workis with specific type

On Fri, Oct 5, 2018 at 2:21 AM Javier Calvarro Nelson <
[email protected]> wrote:

@andersonphiri https://github.com/andersonphiri That's not the case,
you need to have the specific user type for DI purposes

—
You are receiving this because you were mentioned.
Reply to this email directly, view it on GitHub
https://github.com/aspnet/Mvc/issues/4783#issuecomment-427120378, or mute
the thread
https://github.com/notifications/unsubscribe-auth/ALZITXxzdH3nvhA0t8V04qBGPEG1wGPMks5uhlG3gaJpZM4IrLfu
.

--
Anderson Phiri
Honors in Business Studies and Computing Science Technology(BSCT) - 2013
to 2017
Institution: University Of Zimbabwe

Contacts: [phone]

--
Anderson Phiri
Honors in Business Studies and Computing Science Technology(BSCT) - 2013 to
2017
Institution: University Of Zimbabwe

Contacts: [phone]