c# - Parameterless Controller Constructor Autofac -

i'm having problems mvc4 project frustratingly works fine on 1 computer (vs 2012), not on other (vs 2010).

(i hope conflicting vs versions aren't problem, project came vs2010 computer, did work on 2012, , i'm trying put on 2010.)

i "make sure controller has parameterless public constructor" error think controller has default one:

public class homecontroller : authorizedcontrollerbase {     public viewresult index()     {         return view();     } } 

the code throws error in controllerfactory:

public class controllerfactory : defaultcontrollerfactory {     private readonly istateprovider _sessionstateprovider;      public controllerfactory(istateprovider astateprovider)     {         _sessionstateprovider = astateprovider;     }      public override icontroller createcontroller     (system.web.routing.requestcontext requestcontext, string controllername)     {         icontroller controller = base.createcontroller(requestcontext, controllername);         if (controller basecontroller)         {             var basecontroller = (basecontroller)controller; // ***this line***             basecontroller.sessiondata = _sessionstateprovider;         }         return controller;     } } 

i saw question similar interface implementer had no public constructor, again, think mine have default one:

public class sessionstateprovider : istateprovider {     public object this[string key]     {                 {             return httpcontext.current.session[key];         }         set         {             httpcontext.current.session[key] = value;         }     }      public void remove(string key)     {         httpcontext.current.session.remove(key);     } } 

based on answers other questions , stacktrace, i'm looking autofac problems. did install-package autofac , have latest (3.0.2) in project, , stacktrace looks this:

innerexception: autofac.core.dependencyresolutionexception    message=an exception thrown while executing resolve operation. see innerexception details. ---> common language runtime detected invalid program. (see inner exception details.)    source=autofac    stacktrace:         @ autofac.core.resolving.resolveoperation.execute(icomponentregistration registration, ienumerable`1 parameters)         @ autofac.core.lifetime.lifetimescope.resolvecomponent(icomponentregistration registration, ienumerable`1 parameters)         @ autofac.resolutionextensions.tryresolveservice(icomponentcontext context, service service, ienumerable`1 parameters, object& instance)         @ autofac.resolutionextensions.resolveoptionalservice(icomponentcontext context, service service, ienumerable`1 parameters)         @ autofac.resolutionextensions.resolveoptional(icomponentcontext context, type servicetype, ienumerable`1 parameters)         @ autofac.resolutionextensions.resolveoptional(icomponentcontext context, type servicetype)         @ autofac.integration.mvc.autofacdependencyresolver.getservice(type servicetype)         @ system.web.mvc.defaultcontrollerfactory.defaultcontrolleractivator.create(requestcontext requestcontext, type controllertype)    innerexception: system.invalidprogramexception         message=common language runtime detected invalid program.         source=autofac         stacktrace:              @ autofac.core.activators.reflection.constructorparameterbinding..ctor(constructorinfo ci, ienumerable`1 availableparameters, icomponentcontext context)              @ autofac.core.activators.reflection.reflectionactivator.<>c__displayclass5.<getconstructorbindings>b__4(constructorinfo ci)              @ system.linq.enumerable.whereselectarrayiterator`2.movenext()              @ system.linq.enumerable.whereenumerableiterator`1.movenext()              @ system.linq.buffer`1..ctor(ienumerable`1 source)              @ system.linq.enumerable.toarray[tsource](ienumerable`1 source)              @ autofac.core.activators.reflection.reflectionactivator.activateinstance(icomponentcontext context, ienumerable`1 parameters)              @ autofac.core.resolving.instancelookup.activate(ienumerable`1 parameters)              @ autofac.core.resolving.instancelookup.execute()              @ autofac.core.resolving.resolveoperation.getorcreateinstance(isharinglifetimescope currentoperationscope, icomponentregistration registration, ienumerable`1 parameters)              @ autofac.core.resolving.instancelookup.resolvecomponent(icomponentregistration registration, ienumerable`1 parameters)              @ autofac.core.registration.externalregistrysource.<>c__displayclass8.<registrationsfor>b__3(icomponentcontext c, ienumerable`1 p)              @ autofac.core.activators.delegate.delegateactivator.activateinstance(icomponentcontext context, ienumerable`1 parameters)              @ autofac.core.resolving.instancelookup.activate(ienumerable`1 parameters)              @ autofac.core.resolving.instancelookup.execute()              @ autofac.core.resolving.resolveoperation.getorcreateinstance(isharinglifetimescope currentoperationscope, icomponentregistration registration, ienumerable`1 parameters)              @ autofac.core.resolving.resolveoperation.resolvecomponent(icomponentregistration registration, ienumerable`1 parameters)              @ autofac.core.resolving.resolveoperation.execute(icomponentregistration registration, ienumerable`1 parameters) 

this happens though indeed registering istateprovider this: builder.register(context => new sessionstateprovider()).as<istateprovider>(); in containerbuilder.buildcontainer(). in global.asax register controllerfactory:

protected void application_start() {     container = containerbuilder.buildcontainer();     var autofacdependencyresolver = new autofacdependencyresolver(container);     dependencyresolver.setresolver(autofacdependencyresolver);     controllerbuilder.current.setcontrollerfactory(new controllerfactory(container.resolve<istateprovider>()));     application_start_mvc(); } 

i'm not sure next possible steps trying resolve (i'm way out of depth parsing autofac stacktrace), , i'd appreciate help.

hi don't test in vs 2010 because don't have it. in vs 2013 works fine.

 public static class dependencyinjection     {         public static void init()         {             // create container builder.             var builder = new containerbuilder();              //register controllers             builder.registercontrollers(assembly.getexecutingassembly());              // register other dependencies.             builder.registertype<sessionstateprovider>().as<istateprovider>().instanceperhttprequest();              // build container.             var container = builder.build();              //configure asp.net mvc dependency resolver             dependencyresolver.setresolver(new autofacdependencyresolver(container));          }     }   public class sessionstateprovider:istateprovider {     public object this[string key]     {                 {             return httpcontext.current.session[key];         }         set         {             httpcontext.current.session[key] = value;         }     }      public void remove(string key)     {         httpcontext.current.session.remove(key);     } }  public interface istateprovider {   object this[string key] { get; set; }   void remove(string key);  }  public class mvcapplication : system.web.httpapplication {     protected void application_start()     {         arearegistration.registerallareas();         webapiconfig.register(globalconfiguration.configuration);         filterconfig.registerglobalfilters(globalfilters.filters);         routeconfig.registerroutes(routetable.routes);         dependencyinjection.init();         bundleconfig.registerbundles(bundletable.bundles);     } }  public abstract class basecontroller : controller {     protected istateprovider sessionstateprovider { get; private set; }     public basecontroller()     {         sessionstateprovider = dependencyresolver.current.getservice<istateprovider>();     } }   public class homecontroller : basecontroller {      public actionresult index()     {         sessionstateprovider["1"] = 2;         return view();     }  } 

autofac -> https://www.nuget.org/packages/autofac.mvc4/