Simple injector in Web.MVC, no injection happens
This is my first time using Simple Injector. Nuget version for MVC QuickStart. In SimpleInjectorInializer.cs, this is called.
public static class SimpleInjectorInitializer
{
/// <summary>Initialize the container and register it as MVC3 Dependency Resolver.</summary>
public static void Initialize()
{
// Did you know the container can diagnose your configuration?
// Go to: https://simpleinjector.org/diagnostics
var container = new Container();
InitializeContainer(container);
container.RegisterMvcControllers(Assembly.GetExecutingAssembly());
container.Verify();
DependencyResolver.SetResolver(new SimpleInjectorDependencyResolver(container));
}
private static void InitializeContainer(Container container)
{
// For instance:
container.Register<IQueryProcessor, QueryProcessor>(Lifestyle.Singleton);
container.RegisterInitializer<WebApiController>(
p=> p.QueryProcessor = container.GetInstance<IQueryProcessor>());
}
WebApiController.cs. Injection doesn't happen.
public class WebApiController : ApiController
{
public IQueryProcessor QueryProcessor { get; set; }
public WebApiController(IQueryProcessor queryProcessor)
{
QueryProcessor = queryProcessor;
}
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1 answer
MVC controllers are not the same as pre-ASP.NET5 (MVC 6) WebAPI controllers, in that MVC controllers implement the interface IController
and Web API controllers implement the interface IHttpController
.
A simple injector makes it easy to override the default IHttpController
instance according to the documentation.
using System.Web.Http;
using SimpleInjector;
using SimpleInjector.Integration.WebApi;
// This is the Application_Start event from the Global.asax file.
protected void Application_Start() {
// Create the container as usual.
var container = new Container();
// Register your types, for instance using the RegisterWebApiRequest
// extension from the integration package:
container.RegisterWebApiRequest<IUserRepository, SqlUserRepository>();
// This is an extension method from the integration package.
container.RegisterWebApiControllers(GlobalConfiguration.Configuration);
container.Verify();
GlobalConfiguration.Configuration.DependencyResolver =
new SimpleInjectorWebApiDependencyResolver(container);
// Here your usual Web API configuration stuff.
}
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