Unity.AspNet.Webapi v5.11.1 global.asax question

Question

User-1104215994 posted

Hi,

I am trying to use Unity.AspNet.Web API v5.11.1 as IOC container. Couldn't figure it out if I should add something about unity on Application Start.

Here is my Unity config:

public static void RegisterTypes(IUnityContainer container)
        {
            // NOTE: To load from web.config uncomment the line below.
            // Make sure to add a Unity.Configuration to the using statements.
            // container.LoadConfiguration();

            // TODO: Register your type's mappings here.
            // container.RegisterType<IProductRepository, ProductRepository>();
            container.RegisterType<IGameServices, GameServices>().RegisterType<UnitOfWork>(new Unity.Lifetime.HierarchicalLifetimeManager());

        }

Answer 1

User1120430333 posted

Are you not following some article on how to implement Unity in an ASP.NET WebAPI solution?

Answer 2

User-1104215994 posted

Are you not following some article on how to implement Unity in an ASP.NET WebAPI solution?

seems like <g class="gr_ gr_6 gr-alert gr_gramm gr_inline_cards gr_run_anim Grammar only-ins replaceWithoutSep" id="6" data-gr-id="6">following</g>:

https://www.c-sharpcorner.com/UploadFile/1492b1/restful-day-2-inversion-of-control-using-dependency-injecti/

https://blog.nicolaayan.com/2017/12/dependency-injection-with-unity-in-an-asp-net-application/

Answer 3

User1120430333 posted

My usage if Unity in ASP.NET WebAPI using VB.NET.

Global.asax.vb

Imports System.IO
Imports System.Web.Http
Imports System.Web.Optimization

Public Class WebApiApplication
    Inherits System.Web.HttpApplication

    Sub Application_Start()
        AreaRegistration.RegisterAllAreas()
        GlobalConfiguration.Configure(AddressOf WebApiConfig.Register)
        FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters)
        RouteConfig.RegisterRoutes(RouteTable.Routes)
        BundleConfig.RegisterBundles(BundleTable.Bundles)
        log4net.Config.XmlConfigurator.Configure(new FileInfo(Server.MapPath("~/Web.config")))
    End Sub
End Class

Static class  in App_Start folder

Imports System.Data.Entity
Imports System.Web.Http
Imports Unity
Imports DAL
Imports Unity.Lifetime


Public Module WebApiConfig
    Public Sub Register(ByVal config As HttpConfiguration)
        ' Web API configuration and services

        dim container = new UnityContainer()
        container.RegisterType(Of IDaoProject, DaoProject) ()
        container.RegisterType(Of IDaoTask, DaoTask) ()
        container.RegisterType(Of IDaoCache, DaoCache) ()
        container.RegisterType(Of DbContext, ProjectManagementEntities)(new HierarchicalLifetimeManager())
        config.DependencyResolver = new UnityResolver(container)

        ' Web API routes
        config.MapHttpAttributeRoutes()

        config.Routes.MapHttpRoute(
            name:="DefaultApi",
            routeTemplate:="api/{controller}/{action}/{id}",
            defaults:=New With {.controller = "Home", .action = "Index", .id = UrlParameter.Optional}
        )
    End Sub

    
End Module

Answer 4

User-1104215994 posted

Please show the unity config.

Answer 5

User1120430333 posted

The Unity config is the WebApiConfig that is being used globally and has the Unity container in the Register static class that is doing the Unity registrations. Anything in the Modules.vb in VB.NET is the means to make a class static. You could remove the route code out of the Register class and rename the WebApiConfig.vb to UnityConfig.vb.

Answer 6

User71929859 posted

Couldn't figure it out if I should add something about unity on Application Start.

No you don't have to specify anything specifically. When you install Unity, you should get a class called UnityWebApiActivator. It should be responsible for registering unity.

If you check that class, you should see the line below

[assembly: WebActivatorEx.PreApplicationStartMethod(typeof(WebApi.UnityWebApiActivator), nameof(WebApi.UnityWebApiActivator.Start))]

That is basically saying fire the Start method in UnityWebApiActivator class when Application Starts.

Registering your mappings under RegisterTypes method should be enough to get you going.

What's happening? I don't understand what's the problem here.

Answer 7

User-1104215994 posted

thank you for the info Ruchira.