None of the constructors found with 'Autofac.Core.Activators.Reflection.DefaultConstructorFinder' on type 'LMS.Services.Security.EncryptionService' can be invoked with the available services and parameters: Cannot resolve parameter 'LMS.Models.SecuritySettings securitySettings' of constructor 'Void .ctor(LMS.Models.SecuritySettings)'
Here are the code files
Service Class
public class EncryptionService : IEncryptionService
{
private readonly SecuritySettings _securitySettings;
public EncryptionService(SecuritySettings securitySettings)
{
this._securitySettings = securitySettings;
}
}
Bootstrapper
private static void SetAutofacContainer()
{
var builder = new ContainerBuilder();
builder.RegisterControllers(Assembly.GetExecutingAssembly());
builder.RegisterType<UnitOfWork>().As<IUnitOfWork>().InstancePerRequest();
builder.RegisterType<DatabaseFactory>().As<IDatabaseFactory>().InstancePerRequest();
builder.RegisterAssemblyTypes(typeof(CourseRepository).Assembly)
.Where(t => t.Name.EndsWith("Repository"))
.AsImplementedInterfaces()
.InstancePerRequest();
builder.RegisterAssemblyTypes(typeof(CourseService).Assembly)
.Where(t => t.Name.EndsWith("Service"))
.AsImplementedInterfaces()
.InstancePerRequest();
builder.RegisterFilterProvider();
var container = builder.Build();
DependencyResolver.SetResolver(new AutofacDependencyResolver(container));
}
It was working earlier. But when I introduced the EncryptionService implementation, I am receiving above error.
Here is the other working code implementation as follows
public class CourseService : ICourseService
{
#region Fields
private readonly IRepository<Course> _courseRepository;
private readonly IUnitOfWork _unitOfWork;
#endregion
#region ctor
public CourseService(IRepository<Course> courseRepository, IUnitOfWork unitOfWork)
{
_courseRepository = courseRepository;
_unitOfWork = unitOfWork;
}
#endregion
}
When Autofac try to resolve EncryptionService it tries to resolve a SecuritySettings service but Autofac is not aware of such a registration.
To resolve this error, you should register a SecuritySettings implementation.
For example :
builder.RegisterType<SecuritySettings>()
.As<SecuritySettings>();
in my case i haven't registered the context. I registered the context and it worked for me
builder.RegisterType<JComDbEntities>().AsSelf().As<DbContext>().InstancePerLifetimeScope();
You can also adjust Autofac's behavior to work as you originally anticipated [and align with the defaults of some other containers] by adding the AnyConcreteTypeNotAlreadyRegisteredSource (see the docs for Sources):-
var builder = new ContainerBuilder();
builder.RegisterSource(new AnyConcreteTypeNotAlreadyRegisteredSource());
I've used this scheme together with delegate factories and implicit Relationship Types to pretty much remove explicit registration from a suite of apps but as you seem tohave gone down the road of explicit (boilerplaty :P) registration I'd recommend googling AnyConcreteTypeNotAlreadyRegisteredSource to see whether a broader scheme may fit what you're looking for better.