Azure B2C in Asp.netBoilerplate - asp.net-core

Question

I am using AspNetBoilerplate template (.NET CORE 3.1). I am trying to add Azure b2c AD authentication
following official help: https://github.com/Azure-Samples/active-directory-aspnetcore-webapp-openidconnect-v2/tree/master/1-WebApp-OIDC/1-5-B2C
I have successfully implemented above without aspnetBoilerplate template, it works fine. when I try to add this in aspnetboilerplate, it gives me below error on click of Login button.
My View:
<form method="get" asp-area="MicrosoftIdentity" asp-controller="Account" asp-action="SignIn">
<button type="submit" class="btn btn-primary">Login with Microsoft Azure</button>
</form>

Answer 1

Account controller is defined in the Microsoft.Identity.Web.UI NuGet package, in the Area MicrosoftIdentity.
After associating or adding to the asp.net core 3.1 boiler template , check if the namespaces are missed or assembly in dll file is missing and try to add them and by installing the nuget package .
Or
Check if the configurations associated with the project are missing by chance and see if namespace can be configured manually.
According to signs in/out users - Microsoft identity platform | Microsoft Docs
In ASP.NET, selecting the Sign-in button in the web app triggers the
SignIn action on the AccountController controller. In previous
versions of the ASP.NET core templates, the Account controller was
embedded with the web app. That's no longer the case because the
controller is now part of the Microsoft.Identity.Web.UI NuGet package.
See AccountController.cs for details. This controller also handles the
Azure AD B2C applications.
Check with below code in configure services method in startup class
services.AddMicrosoftIdentityWebAppAuthentication(Configuration, "AzureAdB2C");
services.AddControllersWithViews()
.AddMicrosoftIdentityUI();
services.AddRazorPages();
services.AddOptions();
services.Configure<OpenIdConnectOptions>(Configuration.GetSection("AzureAdB2C"));
}
And the below in Configure() in Startup.cs
app.UseEndpoints(endpoints =>
{
endpoints.MapControllerRoute(
name: "default",
pattern: "{controller=Home}/{action=Index}/{id?}");
endpoints.MapRazorPages();
});
Check with the name spaces to be injected in views : azure ad b2c-asp.net core 3.1.
Add the following settings in the appsettings.json
{
"AzureAdB2C": {
"Instance": "https://<your-tenant-name>.b2clogin.com",
"ClientId": "<web-app-application-id>",
"Domain": "<your-b2c-domain>"
"CallbackPath": "/signin-oidc",
"SignUpSignInPolicyId": "B2C_1_test",
"ResetPasswordPolicyId": "B2C_1_test2",
"EditProfilePolicyId": "B2C_1_test1"
},
References:
ASP.NET MVC 3 - Handling Not Found
(c-sharpcorner.com)
NetCoreWeb/NetCoreB2C at master |
(github.com)
Using Azure B2C with MVC, .NET Core 3.1 - Stack Overflow