Scoped service in DBContext with DBContextFactory can't resolve from root provider

user_4079949 0
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I want to register a scoped ICurrentUserService and then use it in the DbContext to set the CreatedBy property on every entity. I want it scoped because it uses the current HttpContext to get the user id from the claims and the HttpContext is scoped by definition.

services.AddTransient<ICurrentUserService, CurrentUserService>();

However when I try to use this with the DbContextFactory like this:

services.AddDbContextFactory<MyDbContext>(options =>
    options.UseSqlServer(config.ConnectionStrings.MSSQLConnection, x =>
        {
            x.MigrationsHistoryTable("...");
            x.MigrationsAssembly("...");
        }));

services.AddScoped<IMyDbContext>(provider => provider.GetRequiredService<IDbContextFactory<MyDbContext>>().CreateDbContext());
services.AddScoped<MyDbContext>(provider => provider.GetRequiredService<IDbContextFactory<MyDbContext>>().CreateDbContext());

I get the error

Cannot resolve scoped service 'SomeNamespace.ICurrentUserService' from root provider.

I can change it to Transient but that seems wrong and will probably be an issue later on for testing when I want to mock this and every class gets a new instance.

I'm actually not sure why Scoped does not work here. The DbContextFactory is registered Singleton but the Context is resolved as Scoped too.

entity-framework-core dbcontext .net-core dependency-injection
1 Answers

Try it with ServiceLifetime.Scoped

services.AddDbContextFactory<ApplicationDbContext>(contextOptions => 
                    ... YOUR OPTIONS
), ServiceLifetime.Scoped);
user_16810900
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