Unity does not resolve the dependency

Question

I use Unity with Unity.MVC5. The class that registers the types and the dependency resolver is as below:

public static class UnityConfig
{
    public static void RegisterComponents()
    {
        var container = new UnityContainer();

        container
            .RegisterType<ILogger, Nlogger>()
            .RegisterType<IDataAccessLayer, SqlDataAccessLayer>()
            .RegisterType<IEventBusiness, EventBusiness>();

        DependencyResolver.SetResolver(new UnityDependencyResolver(container));

    }
}

And here is my Global.asax code:

void Application_Start(object sender, EventArgs e)
{
    UnityConfig.RegisterComponents();
    GlobalConfiguration.Configure(WebApiConfig.Register);
    RouteConfig.RegisterRoutes(RouteTable.Routes);  
}

In one of my controllers I have a property like this:

[Dependency]
public IEventBusiness EventBusiness { get; set; }

I expect that this property be set automatically by Unity but it's always null. Can someone help me to figure out what I am doing wrong?

You might also try supplying an InjectionProperty config on the registration. Alternatively, why not try constructor injection instead? — StuartLC
– StuartLC, Commented Mar 6, 2014 at 8:14
@TylerOhlsen, no I don't register the controllers. Do I have to? Inside the controller when I check DependencyResolver.Current, it gives me the correct instance of UnityContainer with all the registered types. — Aref Karimi
– Aref Karimi, Commented Mar 6, 2014 at 22:16

Aref Karimi · Accepted Answer · 2014-03-06 22:44:13Z

5

Thanks for your help guys. I removed Unity.MVC5 and installed Unity plus Unity.Bootstrapper instead. Now everything works fine. I followed this article to resolve the issue: http://msdn.microsoft.com/en-us/library/dn178463(v=pandp.30).aspx

answered Mar 6, 2014 at 22:44

Aref Karimi

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