So after much screwing around I finally got Ninject wired in and compiling in my MVC4 application. The problem I was running into is the IDependencyScope interface no longer exists from what I can tell and the System.Web.Http.Dependencies namespace was done away with.
So, my problem now is I have everything wired in and upon running the application I get:
Sequence contains no elements
[InvalidOperationException: Sequence contains no elements]
System.Linq.Enumerable.Single(IEnumerable`1 source) +379
Ninject.Web.Mvc.NinjectMvcHttpApplicationPlugin.Start() in c:\Projects\Ninject\ninject.web.mvc\mvc3\src\Ninject.Web.Mvc\NinjectMvcHttpApplicationPlugin.cs:53
Ninject.Web.Common.Bootstrapper.<Initialize>b__0(INinjectHttpApplicationPlugin c) in c:\Projects\Ninject\Ninject.Web.Common\src\Ninject.Web.Common\Bootstrapper.cs:52
Ninject.Infrastructure.Language.ExtensionsForIEnumerableOfT.Map(IEnumerable`1 series, Action`1 action) in c:\Projects\Ninject\ninject\src\Ninject\Infrastructure\Language\ExtensionsForIEnumerableOfT.cs:31
Ninject.Web.Common.Bootstrapper.Initialize(Func`1 createKernelCallback) in c:\Projects\Ninject\Ninject.Web.Common\src\Ninject.Web.Common\Bootstrapper.cs:53
Ninject.Web.Common.NinjectHttpApplication.Application_Start() in c:\Projects\Ninject\Ninject.Web.Common\src\Ninject.Web.Common\NinjectHttpApplication.cs:81
Which I haven't been able to track down or even begin to fathom where it is coming from.
My standard Ninject methods inside the Global.asax.cs look as follows:
protected override IKernel CreateKernel()
{
var kernel = new StandardKernel();
kernel.Load(Assembly.GetExecutingAssembly());
kernel.Bind<IRenderHelper>().To<RenderHelper>();
GlobalConfiguration.Configuration.ServiceResolver.SetResolver(new NinjectDependencyResolver(kernel));
return kernel;
}
protected override void OnApplicationStarted()
{
base.OnApplicationStarted();
AreaRegistration.RegisterAllAreas();
RegisterGlobalFilters(GlobalFilters.Filters);
RegisterRoutes(RouteTable.Routes);
BundleTable.Bundles.RegisterTemplateBundles();
}
And my custom resolver:
public class NinjectDependencyResolver : IDependencyResolver
{
private readonly IKernel _kernel;
public NinjectDependencyResolver(IKernel kernel)
{
_kernel = kernel;
}
public object GetService(Type serviceType)
{
return _kernel.TryGet(serviceType);
}
public IEnumerable<object> GetServices(Type serviceType)
{
try
{
return _kernel.GetAll(serviceType);
}
catch (Exception)
{
return new List<object>();
}
}
public void Dispose()
{
// When BeginScope returns 'this', the Dispose method must be a no-op.
}
}
Any insight here would be greatly appreciated. I've spent far too much time already trying to get any DI framework wired into the latest MVC4 RC running on .NET 4.5 and have now just reached my tolerance level for things just not working at all..
Edit #1 A little further research digging around in github the ExtensionsForIEnumerableOfT.cs doesn't help much:
And possibly if I had wrote it myself I would begin to understand this but Bootstrapper.cs doesn't help too much either.
https://github.com/ninject/Ninject.Web.Common/blob/master/src/Ninject.Web.Common/Bootstrapper.cs
Hoping these details will make it easier for any of you who might have more experience with Ninject.
Edit #2 The error encountered is specifically in NinjectMvcHttpApplicationPlugin.cs:
The offending line is:
ModelValidatorProviders.Providers.Remove(ModelValidatorProviders.Providers.OfType<DataAnnotationsModelValidatorProvider>().Single());
Which lives in the following method:
public void Start()
{
ModelValidatorProviders.Providers.Remove(ModelValidatorProviders.Providers.OfType<DataAnnotationsModelValidatorProvider>().Single());
DependencyResolver.SetResolver(this.CreateDependencyResolver());
RemoveDefaultAttributeFilterProvider();
}
The ModelValidatorProviders collection contains 2 elements: {System.Web.Mvc.DataErrorInfoModelValidatorProvider} {System.Web.Mvc.ClientDataTypeModelValidatorProvider}
And it's trying to remove a single instance of:
System.Web.Mvc.DataAnnotationsModelValidatorProvider
Which apparently isn't loaded up in the ModelValidationProviders.Providers collection. Any ideas from here?
Resolution to Above Exception And Onto The Next
To resolve the issue in the ModelValidatorProviders I had to manually add an object it was expecting. So now my CreateKernel method looks like:
protected override IKernel CreateKernel()
{
var kernel = new StandardKernel();
kernel.Load(Assembly.GetExecutingAssembly());
kernel.Bind<IRenderHelper>().To<RenderHelper>();
kernel.Unbind<IDocumentViewerAdapter>();
GlobalConfiguration.Configuration.ServiceResolver.SetResolver(new NinjectDependencyResolver(kernel));
ModelValidatorProviders.Providers.Add(new DataAnnotationsModelValidatorProvider());
FilterProviders.Providers.Add(new FilterAttributeFilterProvider());
return kernel;
}
Now it runs and gets into the actual guts of Ninject but still has an issue, one that makes no sense yet again:
Exception Details: Ninject.ActivationException: Error activating IntPtr
No matching bindings are available, and the type is not self-bindable.
Activation path:
3) Injection of dependency IntPtr into parameter method of constructor of type Func{IKernel}
2) Injection of dependency Func{IKernel} into parameter lazyKernel of constructor of type HttpApplicationInitializationHttpModule
1) Request for IHttpModule
Suggestions:
1) Ensure that you have defined a binding for IntPtr.
2) If the binding was defined in a module, ensure that the module has been loaded into the kernel.
3) Ensure you have not accidentally created more than one kernel.
4) If you are using constructor arguments, ensure that the parameter name matches the constructors parameter name.
5) If you are using automatic module loading, ensure the search path and filters are correct.
