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Pro ASP.NET MVC 4, 4th edition Reading note---Part(1) DI
What I learned from Pro ASP.NET MVC 4 book
Open source of Asp.net MVC
http://www.opensource.org/licenses/ms-pl.html
1. Introduce new trends of web development
Node.js, Ruby on Rails,
2. Ninject
1) Ninject is used to de-couple classed, which known as DI dependency Inject. It is a DI container.
2) Adding Ninject to the Visual Studio Project
Open NuGet->Online-> search for ninject
3) How to use Ninject to implement DI
Implement Resolver
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web.Mvc; 5 using Ninject; 6 using Ninject.Parameters; 7 using Ninject.Syntax; 8 using System.Configuration; 9 using EssentialTools.Models;10 11 namespace EssentialTools.Infrastructure12 {13 public class NinjectDependencyResolver : IDependencyResolver14 {15 private IKernel kernel;16 17 public NinjectDependencyResolver()18 {19 kernel = new StandardKernel();20 AddBindings();21 }22 23 public object GetService(Type serviceType)24 {25 return kernel.TryGet(serviceType);26 }27 28 public IEnumerable<object> GetServices(Type serviceType)29 {30 return kernel.GetAll(serviceType);31 }32 33 private void AddBindings()34 {35 kernel.Bind<IValueCalculator>().To<LinqValueCalculator>();36 //Create binding with property value37 kernel.Bind<IDiscountHelper>().To<DefaultDiscountHelper>().WithPropertyValue("DiscountSize", 50m);38 39 //Binding when specific condition happened40 kernel.Bind<IDiscountHelper>().To<FlexibleDiscountHelper>()41 .WhenInjectedInto<LinqValueCalculator>();42 }43 }44 }
Inject resolver into Global.asax
protected void Application_Start() { AreaRegistration.RegisterAllAreas(); DependencyResolver.SetResolver(new NinjectDependencyResolver()); WebApiConfig.Register(GlobalConfiguration.Configuration); FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters); RouteConfig.RegisterRoutes(RouteTable.Routes); }
Use DI relationship in Controller
private IValueCalculator calc; // // GET: /Home/ public HomeController(IValueCalculator calcParam) { calc = calcParam; }
3. Moq
It is a dll used to unit testing
Pro ASP.NET MVC 4, 4th edition Reading note---Part(1) DI
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