asp.net-mvc – EF上下文管理

> Ninject
> Autofac
> StructureMap
>团结

使用IoC容器,您可以告诉它如何管理单个数据上下文(最常见的是,每个请求).当您为每个请求设置数据上下文时,容器将自动神奇地为每个请求提供需要数据上下文相同数据上下文的任何类.

这是设置Ninject的good article.

假设您正在使用通用存储库,那么您的代码最终会看起来像什么：

Ninject模块：

public class NinjectRegistrationModule : NinjectModule
{
    public override void Load()
    {
        Bind<MyDataContext>().ToSelf().InRequestScope();
        Bind(typeof(RepositoryImplementation<>)).ToSelf().InRequestScope();

    }
}

通用存储库：

public RepositoryImplementation<T> : IRepository<T> where T : class
{
    MyDataContext _dataContext;

    public RepositoryImplementation<T>(MyDataContext dataContext)
    {
        _dataContext = dataContext;
    }

    // bunch of methods that utilize _dataContext
}

服务类别：

public class MyServiceClass
{
    IRepository<SomeEntity> _someEntityRepository;

    public MyServiceClass(IRepository<SomeEntity> someEntityRepository)
    {
        _someEntityRepository = someEntityRepository;
    }

    // do stuff with _someEntityRepository = someEntityRepository;
}

控制器：

public class MyController
{
    MyServiceClass _myServiceClass;

    public MyController(MyServiceClass myServiceClass)
    {
        // Ninject will auto-magically give us a myServiceClass
        // which will Ninject will inject a repository into MyServiceClass's constructor
        _myServiceClass = myServiceClass;
    }

    public ActionResult MyAction()
    {
        // use _myServiceClass to do stuff
        return View();
    }
}