dependency injection - Register multiple interfaces that has explicit implementation on a single instance -

i using autofac , not ioc master.

consider scenario:

public interface ibeforerequesttask {     void execute(); }  public interface iafterrequesttask {     void execute(); }  public class taskexecutor : ibeforerequesttask, iafterrequesttask {     void ibeforerequesttask.execute()     {         // code     }      void iafterrequesttask.execute()     {         // code     } } 

so, have explicit implementations. how register these interfaces?

i think can't this:

builder.registertype<ibeforerequesttask> ... builder.registertype<iafterrequesttask> ... 

i read in autofac registration docs must register concrete types.
similar question not treating autofac one: tinyioc: register multiple interfaces on single instance

well, know can easy doing 1-1 (one interface per class, register concrete type). curious it.
don't remeber saw below code using structuremap (can wrong):

action.addtypesof<ibeforerequesttask>(); action.addtypesof<iafterrequesttask>(); 

hope made myself clear. thank all.

edit
created this sample help. ;-)

i'm not sure want achieve if want register single class available in container under 2 interfaces , want have single instance of can this.

builder.registertype<taskexecutor>().as<ibeforerequesttask>().as<iafterrequesttask>().singleinstance();