Using Simple Injector in Web API and OWIN

Question

I\'m experiencing the same problem as described here and my set up is almost identical to this that is actually based on this guide. When I access a method in my controller

Answer 1

I had the same issue but with UnityDependencyResolver. But I think it should also work for SimpleInjectorWebApiDependencyResolver. Try to register your resolver like this (as a Property of HttpConfiguration):

public void Configuration(IAppBuilder app)
{
    var container = GetContainer(); // Initialise container

    HttpConfiguration config = new HttpConfiguration
    {
        DependencyResolver = new SimpleInjectorWebApiDependencyResolver(container);
    };

    WebApiConfig.Register(config);
    app.UseWebApi(config);
}