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/


Comments

Post a Comment

Popular posts from this blog

ios - Memory not freeing up after popping viewcontroller using ARC -

-
hi project arc based, using uinavigationcontroller make transition between viewcontroller. using profiler analyse happening behind scene memory. noticed when push viewcontroller allocate memory components , when pop not freeing allocated memory. since using arc unable implement dealloc or release component. have analysed in detail , there no memory leak in project. i not using strong property push viewcontroller. here how pushing viewcontroller. viewcontroller *obj = [[viewcontroller alloc] init]; [self.navigationcontroller pushviewcontroller:obj animated:no]; any clue whats going on? should free memory have consumed. please advise your description indicates have retain cycle, leads objects not being deallocated. typical source of retain cycles properties assigned loading nib files (usually declared iboutlet ). two strategies break them , release objects: declare property weak : @property (nonatomic, weak) iboutlet uilabel *statuslabel; set property nil in...
Read more

Django REST Framework perform_create: You cannot call `.save()` after accessing `serializer.data` -

-
i have following viewset: class artistprofileviewset(viewsets.modelviewset): queryset = artistprofile.objects.all() serializer_class = artistprofileserializer def perform_create(self, serializer): if serializer.is_valid(): serializer.save() with following serializers: class simpleartisttrackserializer(serializers.hyperlinkedmodelserializer): class meta: model = artisttrack fields = (...my fields...) class artistprofileserializer(serializers.hyperlinkedmodelserializer): owners = userserializer(many=true, required=false) tracks = simpleartisttrackserializer(many=true, required=false) class meta: model = artistprofile fields = (...my fields...) i getting following error: assertionerror: cannot call `.save()` after accessing `serializer.data`.if need access data before committing database inspect 'serializer.validated_data' instead. i don't see editing serializer.data object. th...
Read more

Why does Go error when trying to marshal this JSON? -

-
i'm trying rather simple example of trying decode json file structs using golang. however, when attempting error that json: cannot unmarshal object go value of type []main.track which don't understand. here's code in question, , json can found here . package main import ( "encoding/json" "fmt" "net/http" "os" ) // tracks group of track types type tracks struct { tracks []track } // track represents singular track type track struct { name string url string artist artist } // artist represents single artist type artist struct { name string mbid string url string } func main() { url := "http://ws.audioscrobbler.com/2.0/?method=geo.gettoptracks&api_key=c1572082105bd40d247836b5c1819623&format=json&country=netherlands" response, err := http.get(url) if err != nil { fmt.printf("%s\n", err) os.exit(1) } de...
Read more