Using AUTOFAC to implement dependency injection on the ASP.

Using AUTOFAC in the ASP. NET Web API

1. Install Autofac.webapi with NuGet (AUTOFAC 3.1.0 installed at that time)

PM > Install-package Autofac.webapi

2. Create a new Autofacwebapiconfig class under the App_start folder

  Public classAutofacwebapiconfig { Public Static voidRun () {Setautofacwebapi (); }        Private Static voidSetautofacwebapi () {Containerbuilder builder=NewContainerbuilder (); Httpconfiguration Config=globalconfiguration.configuration; //Register API controllers using assembly scanning.Builder.            Registerapicontrollers (assembly.getexecutingassembly ()); Builder. Registertype<ValueService> (). As<ivalueservice>()                .            Instanceperapirequest (); varcontainer =Builder.            Build (); //Set the WebApi dependency resolver.Config. Dependencyresolver =NewAutofacwebapidependencyresolver (container); }

3. Add the following code to global

protected void Application_Start ()        {            arearegistration.registerallareas ();            Webapiconfig.register (globalconfiguration.configuration);            Filterconfig.registerglobalfilters (globalfilters.filters);            Routeconfig.registerroutes (routetable.routes);            Bundleconfig.registerbundles (bundletable.bundles);             //call autofac DI configurations                 autofacwebapiconfig.run ();        }

Using AUTOFAC to implement dependency injection on the ASP.