How to use DB inside loaded assembly?

Question

ASP.NET

I've been exploring the possibilities of using assemblies in Asp.net core and came across a problem. When you try to call the entry point method in an application that uses a data context to communicate with the database, it throws an error. The context is framed as a service.

An unhandled exception occurred while processing the request.
InvalidOperationException: Unable to resolve service for type 'TestMVC1.Models.MobileContext' while attempting to activate 'TestMVC1.Controllers.HomeController'.
InvalidOperationException: Unable to resolve service for type 'TestMVC1.Models.MobileContext' while attempting to activate 'TestMVC1.Controllers.HomeController'.
Microsoft.Extensions.DependencyInjection.ActivatorUtilities.GetService(IServiceProvider sp, Type type, Type requiredBy,
lambda_method(Closure , IServiceProvider , object[] )
Microsoft.AspNetCore.Mvc.Controllers.ControllerActivatorProvider+<>c__DisplayClass4_0.b__0(ControllerContext controllerContext)
Microsoft.AspNetCore.Mvc.Controllers.ControllerFactoryProvider+<>c__DisplayClass5_0.g__CreateController|0(ControllerContext controllerContext)
Microsoft. Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync
() Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter
()
Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next (ref State next, ref Scope scope, ref object state, ref bool isCompleted)
Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync() Microsoft.AspNetCore.Routing.EndpointMiddleware.Invoke(HttpContext httpContext)
Microsoft.AspNetCore.Routing.EndpointRoutingMiddleware.Invoke (HttpContext httpContext) Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context) Microsoft.AspNetCore.Diagnostics.ExceptionPage .Invoke(HttpContext context)

What is the correct way to use the DB inside the loaded assembly?
Assembly loading

public void ConfigureServices(IServiceCollection services)
        {
            executableLocation = Assembly.GetEntryAssembly().Location;
            var path = Path.Combine(Path.GetDirectoryName(executableLocation), "Plugins");
            var assemblies = Directory
                    .GetFiles(path, "*.dll", SearchOption.AllDirectories)
                    .Select(AssemblyLoadContext.Default.LoadFromAssemblyPath)
                    .ToList();
            path = Path.Combine(path, "TestMVC1.dll");
            var alc = new TestAssemblyLoadContex();
            Assembly a = alc.LoadFromAssemblyPath(path);
            var b = a.GetTypes();
            services.AddMvc().AddApplicationPart(a).AddRazorOptions(
            o =>
            {
                o.FileProviders.Add(new EmbeddedFileProvider(a, a.GetName().Name));
            }
            );
            a.EntryPoint.Invoke(null, new Object[] { null });
        }

Using a service with a database context

private MobileContext db;
        public HomeController(MobileContext context)
        {
            db = context;
        }

Data context

public class MobileContext : DbContext
    {
        public DbSet<Phone> Phones { get; set; }
        public MobileContext(DbContextOptions<MobileContext> options)
            : base(options)
        {
            Database.EnsureCreated();
        }
    }

Answer 1

And you in general registered service for MobileContext somewhere?