How to add additional claims to Blazor WebAssembly 3.2.0 Preview 3 application

Question

I created a Asp.Net Core hosted Blazor webassembly 3.2.0 Preview 3 application with the authentication option of In-App accounts. I then added a few additional attributes to the ApplicationUser class, and migrated these changes to the database. I then implemented a custom claims factory like so:

public class MyCustomUserClaimsPrincipalFactory : UserClaimsPrincipalFactory<ApplicationUser>
{
    public MyCustomUserClaimsPrincipalFactory(
        UserManager<ApplicationUser> userManager,
        IOptions<IdentityOptions> optionsAccessor)
            : base(userManager, optionsAccessor)
    {
    }

    protected override async Task<ClaimsIdentity> GenerateClaimsAsync(ApplicationUser user)
    {
        var identity = await base.GenerateClaimsAsync(user);
        identity.AddClaim(new Claim(ClaimTypes.GivenName, user.FirstName ?? string.Empty));
        .....

        return identity;
    }
}

and registered the claims factory in the server application like so:

services.AddDefaultIdentity<ApplicationUser>(options => options.SignIn.RequireConfirmedAccount = true)
            .AddEntityFrameworkStores<ApplicationDbContext>()
            .AddClaimsPrincipalFactory<MyCustomUserClaimsPrincipalFactory>();

However, when I list the claims in a client web app component, I do not see any of the additional claims I added in the custom claims factory. The code I am using to list the claims is:

<AuthorizeView>
   <Authorized>
    <ul>
        @foreach (var claim in context.User.Claims)
        {
            <li><span>@claim.Type</span><span>@claim.Value</span></li>
        }
    </ul>
   </Authorized>
</AuthorizeView>

I verified that the claims factory code is being called. How can I get the additional claims in the client web app?

Edit: I have even tried using ClaimsTransformer (as suggested here) but I still do not see the additional claims

Answer 1

I followed the instructions of dfkeenan on this thread: https://github.com/dotnet/aspnetcore/issues/20887

and I added a ProfileService on which i added the claims I needed (CompanyName, CompanyID)

public class ProfileService : IProfileService
{
    public ProfileService()
    {
    }

    public Task GetProfileDataAsync(ProfileDataRequestContext context)
    {
        var nameClaim = context.Subject.FindAll(JwtClaimTypes.Name);
        context.IssuedClaims.AddRange(nameClaim);

        var roleClaims = context.Subject.FindAll(JwtClaimTypes.Role);
        context.IssuedClaims.AddRange(roleClaims);
        context.IssuedClaims.AddRange(context.Subject.FindAll("CompanyName"));
        context.IssuedClaims.AddRange(context.Subject.FindAll("CompanyId"));

        return Task.CompletedTask;
    }

    public Task IsActiveAsync(IsActiveContext context)
    {
        return Task.CompletedTask;
    }
}

and then registered

services.AddTransient<IProfileService, ProfileService>();

on ConfigureServices