'System.Reflection.TargetInvocationException' au démarrage de l'application asp.net mvc5 en raison de routes.MapMvcAttributeRoutes()

Question

J'ai Google ce problème, mais pas encore la solution.J'ai également essayé les tutoriels à la fois vidéo et textuelle.Je suis nouveau à asp.net, j'ai déjà essayé «Routage basé sur la Convention» mais en essayant «routage des attributs» dans asp.net mvc5 j'ai eu cette erreur.Cette erreur vient sur la course/construire l'application. J'ai utilisé routes.MapMvcAttributeRoutes(); et suivi les étapes de nombreux enseignants en ligne presque la solution de tous les corps était la même mais il n'a pas résolu mon problème.

here is error picture

RouteConfig.cs

routes.MapMvcAttributeRoutes();//error occurs on this line 

contrôleur

[Route("movies/released/{year}/{month:Regex(//d{2}:Range(1,12)}")] 
public ActionResult ByReleasedDate(int year,int month) 
{ 
    return Content(year+"/"+month); 
    //return View(); 
} 

erreur Détails

System.Reflection.TargetInvocationException was unhandled by user code 
    HResult=-2146232828 
    Message=Exception has been thrown by the target of an invocation. 
    Source=mscorlib 
    StackTrace: 
     at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) 
     at System.Reflection.RuntimeConstructorInfo.Invoke(BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) 
     at System.Web.Mvc.Routing.DefaultInlineConstraintResolver.CreateConstraint(Type constraintType, String argumentString) 
     at System.Web.Mvc.Routing.DefaultInlineConstraintResolver.ResolveConstraint(String inlineConstraint) 
     at System.Web.Mvc.Routing.InlineRouteTemplateParser.GetInlineConstraint(Group constraintGroup, Boolean isOptional, IInlineConstraintResolver constraintResolver) 
     at System.Web.Mvc.Routing.InlineRouteTemplateParser.ParseRouteTemplate(String routeTemplate, IDictionary`2 defaults, IDictionary`2 constraints, IInlineConstraintResolver constraintResolver) 
     at System.Web.Mvc.Routing.DirectRouteFactoryContext.CreateBuilder(String template, IInlineConstraintResolver constraintResolver) 
     at System.Web.Mvc.Routing.DirectRouteFactoryContext.CreateBuilderInternal(String template) 
     at System.Web.Mvc.RouteAttribute.System.Web.Mvc.Routing.IDirectRouteFactory.CreateRoute(DirectRouteFactoryContext context) 
     at System.Web.Mvc.Routing.DefaultDirectRouteProvider.CreateRouteEntry(String areaPrefix, String controllerPrefix, IDirectRouteFactory factory, IReadOnlyCollection`1 actions, IInlineConstraintResolver constraintResolver, Boolean targetIsAction) 
     at System.Web.Mvc.Routing.DefaultDirectRouteProvider.CreateRouteEntries(String areaPrefix, String controllerPrefix, IReadOnlyCollection`1 factories, IReadOnlyCollection`1 actions, IInlineConstraintResolver constraintResolver, Boolean targetIsAction) 
     at System.Web.Mvc.Routing.DefaultDirectRouteProvider.GetActionDirectRoutes(ActionDescriptor actionDescriptor, IReadOnlyList`1 factories, IInlineConstraintResolver constraintResolver) 
     at System.Web.Mvc.Routing.DefaultDirectRouteProvider.GetDirectRoutes(ControllerDescriptor controllerDescriptor, IReadOnlyList`1 actionDescriptors, IInlineConstraintResolver constraintResolver) 
     at System.Web.Mvc.Routing.AttributeRoutingMapper.AddRouteEntries(SubRouteCollection collector, IEnumerable`1 controllerTypes, IInlineConstraintResolver constraintResolver, IDirectRouteProvider directRouteProvider) 
     at System.Web.Mvc.Routing.AttributeRoutingMapper.MapAttributeRoutes(RouteCollection routes, IEnumerable`1 controllerTypes, IInlineConstraintResolver constraintResolver, IDirectRouteProvider directRouteProvider) 
     at System.Web.Mvc.Routing.AttributeRoutingMapper.MapAttributeRoutes(RouteCollection routes, IInlineConstraintResolver constraintResolver, IDirectRouteProvider directRouteProvider) 
     at System.Web.Mvc.Routing.AttributeRoutingMapper.MapAttributeRoutes(RouteCollection routes, IInlineConstraintResolver constraintResolver) 
     at System.Web.Mvc.RouteCollectionAttributeRoutingExtensions.MapMvcAttributeRoutes(RouteCollection routes) 
     at vidly2.RouteConfig.RegisterRoutes(RouteCollection routes) in C:\Users\Awais ahmed\documents\visual studio 2015\Projects\vidly2\vidly2\App_Start\RouteConfig.cs:line 15 
     at vidly2.MvcApplication.Application_Start() in C:\Users\Awais ahmed\documents\visual studio 2015\Projects\vidly2\vidly2\Global.asax.cs:line 17 
    InnerException: 
     HResult=-2147024809 
     Message=parsing "//d{2}:Range(1,12" - Not enough)'s. 
     Source=System 
     StackTrace: 
      at System.Text.RegularExpressions.RegexParser.ScanRegex() 
      at System.Text.RegularExpressions.RegexParser.Parse(String re, RegexOptions op) 
      at System.Text.RegularExpressions.Regex..ctor(String pattern, RegexOptions options, TimeSpan matchTimeout, Boolean useCache) 
      at System.Text.RegularExpressions.Regex..ctor(String pattern, RegexOptions options) 
      at System.Web.Mvc.Routing.Constraints.RegexRouteConstraint..ctor(String pattern) 
     InnerException: 

Answer 1

je suis arrivé le answer..I modifier mon code contrôleur

[Route("movies/released/{year}/{month:Regex(//d{2}:Range(1,12)}")] 
public ActionResult ByReleasedDate(int year,int month) 
{ 
    return Content(year+"/"+month); 
    //return View(); 
} 

à cette

[Route("movies/released/{year}/{month}")] 
public ActionResult ByReleasedDate(int year,int month) 
{ 
    return Content(year+"/"+month); 
    //return View(); 
} 

Grâce à ce mon Attribute début de routage working.But je ne suis pas sûr pourquoi ce fut si certains peuvent expliquer ce fait?