ASP. NET Web API-using Castle Windsor Dependency Injection

Sample code

Create a Dependency injection container when the project starts

Define a static container IWindsorContainer

1 private static IWindsorContainer _container;

In Application_Start (), create the container

1 _container = new windsorcontainer ();

Call the Container Install method to register the component inside the container

1 _container. Install (Fromassembly.this ());

The statement calls the entire assembly that implements the Install method in the Iwindsorinstaller interface class to register the component with the container. such as the following code:

1  Public void Install (IWindsorContainer container, Iconfigurationstore store) 2 {3    container. Register (4         component.for<idplatypusrepository> (). Implementedby<dplatypusrepository>(). Lifestyleperwebrequest ()); 5 }

Specifically, the code that registers controler with Container is listed:

1  Public void Install (IWindsorContainer container, Iconfigurationstore store) 2 {3      container. Register (classes.fromthisassembly ()4              . Basedon<apicontroller>(). Lifestyleperwebrequest ()); 5 }

Defines the Windsordependencyresolver class that implements the Idependencyresolver interface as a global httpconfiguration Resolver

var New  = dependencyresolver;

Create a new Ihttpcontrolleractivator, change the Controller creation method to get from the container Container

Implementing the Ihttpcontrolleractivator Interface Create method

1  PublicIhttpcontroller Create (httprequestmessage request, Httpcontrollerdescriptor Controllerdescriptor, Type Controllertype)2 {3     varController =(Ihttpcontroller) _container. Resolve (controllertype);4 5 request. Registerfordispose (6         NewRelease (() =_container. Release (Controller));7 8     returnController;9}

and registers the Controller when the Web request is dispose of.

Replace Default ihttpcontrolleractivator Behavior

GlobalConfiguration.Configuration.Services.Replace (typeof(ihttpcontrolleractivator),New Windsorcompositionroot (container));

Resources:

Simplest Possible ASP. NET Web API Project that Implements ioc/di using Castle Windsor

Http://www.codeproject.com/Articles/710662/Simplest-Possible-ASP-NET-Web-API-Project-that-Imp

WebAPI Dependency Injection

Https://github.com/ucdavis/UCDArch/wiki/WebAPI-Dependency-Injection

Difference between inheriting Apicontroller vs. Ihttpcontroller

Http://stackoverflow.com/questions/21464909/difference-between-inheriting-apicontroller-vs-ihttpcontroller

ASP. NET WEB API 2:http MESSAGE Lifecyle

Http://www.asp.net/posters/web-api/asp.net-web-api-poster.pdf

Implementing Web API Dependency Injection using Castle Windsor

Http://beginor.github.io/2014/12/21/webapi-dependency-injection-with-castle-windsor.html

ASP. NET Web API-using Castle Windsor Dependency Injection