RegisterDelegate with runtime servicekey?

[zplan]

I have the following factory class which should create an object based on the service key when resolve is called:

class MyFactory
{
  MyType Create(string servicekey)
  {
  ... implementation (create myType depending on the servicekey)
  }
}

Is there somehow a way accessing the servicekey?

container.RegisterDelegate(typeof(MyType), r => new MyFactory().Create( r.Servicekey?? )));

That the consumer can call resolve like this:

var myTypeKey1 = container.Resolve<MyType>("mykey1");
var myTypeKey2 = container.Resolve<MyType>("mykey2");

[dadhi]

@zplan
You can use the factory expression with Made.Of and pass the ServiceKey as an argument as following:

container.Register<MyFactory>(); // registering the factory to access it via service information below
container.Register<MyType>(Made.Of(
    r => ServiceInfo.Of<MyFactory>(), // the factory to resolve and pass as an argument to the factory method
    myFactory => myFactory.Create(Arg.Index<String>(0)), // substitute the Arg of type String with the value provided by the 0 delegate below 
    request => request.ServiceKey));

Check the docs here https://github.com/dadhi/DryIoc/blob/master/docs/DryIoc.Docs/SelectConstructorOrFactoryMethod.md#using-instance-factory-method

[zplan]

Hi @dadhi
Thanks for your feedback.

Tried your proposal and it works when I resolve without a service key (but the servicekey variable is null obviously)

var myTypeKey1 = container.Resolve<MyType>();

But it fails when I resolve with a servicekey:

var myTypeKey1 = container.Resolve<MyType>("mykey1");

Exception:

DryIoc.ContainerException: 'code: Error.UnableToResolveFromRegisteredServices;
message: Unable to resolve resolution root MyType {ServiceKey="mykey1"}
  from container without scope
  with normal and dynamic registrations:
  (DefaultKey(0), {FactoryID=677})'

Any ideas?
Is it even possible to register without a ServiceKey and resolve with a ServiceKey so that the registered instance factory method is called (wich was registered without servicekey)?

[dadhi]

It is not possible to register without key but resolve with key.

[dadhi]

Looking again, you may try to use Rules.SelectKeyedOverDefaultFactory(serviceKey) described here: https://github.com/dadhi/DryIoc/blob/master/docs/DryIoc.Docs/RulesAndDefaultConventions.md#factoryselector