ninject – Tarik Billa

Error “More than one matching bindings are available” when using Ninject.Web.Mvc 2.0 and ASP.NET MVC 1.0

January 7, 2024 by Tarik

I finally figured this issue out recently. Apparently, the NinjectHttpApplication.RegisterAllControllersIn() function doesn’t do all of the proper bindings needed. It binds your concrete controller implementations to IController requests. For example, if you have a controller class called SampleMvcController, which inherits from System.Web.Mvc.Controller. It would do the following named binding during application start: kernel.Bind<IController>().To(SampleMvcController).InTransientScope().Named(“SampleMvc”); But when … Read more

Making Entity framework implement an interface

January 2, 2024 by Tarik

Presumably the generated entity classes are partial classes, correct? If so, you can just add your own partial class files to specify the interfaces to be implemented – and to provide any actual implementation methods you need. I suspect that will be a lot simpler than changing what gets generated.

NinjectDependencyResolver fails binding ModelValidatorProvider

December 28, 2023 by Tarik

I was having all sorts of grief with the WebApi2 and Ninject initialization after upgrading the Ninject packages (even uninstalling and deleting the old ones). Specifically in your case I would remove these lines of code: // Use the container and our NinjectDependencyResolver as // application’s resolver var resolver = new NinjectDependencyResolver(container); GlobalConfiguration.Configuration.DependencyResolver = resolver; … Read more

What’s the difference between .ToConstructor and .ToMethod in Ninject 3?

December 28, 2023 by Tarik

The first case behaves like To<MyService>() except that you explicitly select the constructor. This means the context is passed through MyService and you can use conditions for IFoo and IBar or one of their dpependencies where in the second case you get a new context for IFoo and IBar and you will not know that … Read more

Validation: How to inject A Model State wrapper with Ninject?

December 22, 2023 by Tarik

The solution given by that article mixes validation logic with the service logic. These are two concerns and they should be separated. When your application grows you will quickly find out that validation logic gets complicated and gets duplicated throughout the service layer. I, therefore, like to suggest a different approach. First of all, it … Read more

Guidelines For Dispose() and Ninject

December 14, 2023 by Tarik

The CLR documentation states that whoever creates a Disposable object is responsible for calling Dispose. In this case the object is created by Ninject. That means you should not call Dispose explicitly. Ninject disposes every Disposable object that has another scope other than InTransientScope as soon as the scope object to which the created object … Read more

Ninject dependency injection with Decorator pattern

December 5, 2023 by Tarik

Use WhenInjectedInto: Bind<IRepository>().To<MoreAdvancedRespository>() .WhenInjectedInto<TrickyRepository>(); Bind<IRepository>().To<SomeSimpleRepository>() .WhenInjectedInto<MoreAdvancedRespository>(); See this blog post for more info.

Ninject InRequestScope missing

September 25, 2023 by Tarik

InRequestScope is available as extension method in Ninject.Web.Common. So if installed earlier through Nuget (Ninject package) now we might need to install additional nuget package Ninject.Web.Common

Error Handling in asp.net mvc 3

September 23, 2023 by Tarik

For Global Error Handling All you have to do is change the customErrors mode=”On” in web.config page Error will be displayed through Error.cshtml resides in shared folder. Make sure that Error.cshtml Layout is not null. [It sould be something like: @{ Layout = “~/Views/Shared/_Layout.cshtml”; } Or remove Layout=null code block] A sample markup for Error.cshtml:- … Read more

With.Parameters.ConstructorArgument with ninject 2.0

September 19, 2023 by Tarik

[Fact] public void CtorArgTestResolveAtGet() { IKernel kernel = new StandardKernel(); kernel.Bind<IWarrior>().To<Samurai>(); var warrior = kernel .Get<IWarrior>( new ConstructorArgument( “weapon”, new Sword() ) ); Assert.IsType<Sword>( warrior.Weapon ); } [Fact] public void CtorArgTestResolveAtBind() { IKernel kernel = new StandardKernel(); kernel.Bind<IWarrior>().To<Samurai>() .WithConstructorArgument(“weapon”, new Sword() ); var warrior = kernel.Get<IWarrior>(); Assert.IsType<Sword>( warrior.Weapon ); }