asp.net mvc - Entity Framework - Simple Inject use Interfaces as Models -

i'm trying implement context this

idbset<iroom> rooms { get; set; } 

however ef doesn't support interfaces.

i've following service may create iroom/room:

public virtual void createsamples() {     room room = new room();     room.encrypted = true;     room.token = guid.newguid();     room.name = "teste-" + room.token.tostring();     room.notracking = true;     room.private = true;     room.userid = this.membership.currentuser;     room.createdby = room.modifiedby = this.membership.currentuser;      this.context.rooms.add(room);     this.context.savechanges(); } 

this "ef interface model" came because want replace

room room = new room();

with

iroom room = objectfactory.create<iroom>();

ps: behind scenes objectfactory.create<> calls injector container , gets object using getinstance<>

the problem here context accepts room not iroom since declaration is:

idbset<room> rooms { get; set; }

if isn't clear this.context.rooms idbset<room>

is possible achieve want?

i'm thinking creating unitofwork receives interface , goes injector container , tries correspondent type. thinking right?