依赖注入与存储库模式的区别

我试图理解依赖注入和存储库模式之间的区别.

根据我的理解,Repository Pattern会执行Dependency Injection正在执行的所有操作,除了在Dependency Injection中我们使用的是Constructor Injection.

好的,让我试着解释一下这个例子:(请注意我使用的是Unity Framework for DI)

创建产品类

public class Product
{
 public int Id { get; set; }
 public string Name { get; set; }
 public string Category { get; set; }
 public decimal Price { get; set; }
}

在模型上创建接口

public interface IProductRepository
{
 IEnumerable GetAll();
 Product Get(int id);
 Product Add(Product item);
 bool Update(Product item);
 bool Delete(int id);
}

实现接口

//ProductRepository.cs
public class ProductRepository : IProductRepository
{
 private List products = new List();
 private int _nextId = 1;

 public ProductRepository()
 {
 // Add products for the Demonstration
 Add(new Product { Name = "Computer", Category = "Electronics", Price = 23.54M });
 Add(new Product { Name = "Laptop", Category = "Electronics", Price = 33.75M });
 Add(new Product { Name = "iPhone4", Category = "Phone", Price = 16.99M });
 }

 public IEnumerable GetAll()
 {
 // TO DO : Code to get the list of all the records in database
 return products;
 }
 public Product Get(int id)
 {
 // TO DO : Code to find a record in database
 return products.Find(p => p.Id == id);
 }
 public Product Add(Product item)
 {
 if (item == null)
 {
 throw new ArgumentNullException("item");
 }

 // TO DO : Code to save record into database
 item.Id = _nextId++;
 products.Add(item);
 return item;
 }
 public bool Update(Product item)
 {
 if (item == null)
 {
 throw new ArgumentNullException("item");
 }

 // TO DO : Code to update record into database
 int index = products.FindIndex(p => p.Id == item.Id);
 if (index == -1)
 {
 return false;
 }
 products.RemoveAt(index);
 products.Add(item);
 return true;
 }
 public bool Delete(int id)
 {
 // TO DO : Code to remove the records from database
 products.RemoveAll(p => p.Id == id);
 return true;
 }
}

对于Bootstrap.cs中的DI Initialize Dependency

private static IUnityContainer BuildUnityContainer()
{
 var container = new UnityContainer();

 // register all your components with the container here
 // it is NOT necessary to register your controllers

 container.RegisterType();

 // e.g. container.RegisterType(); 

 RegisterTypes(container);

 return container;
}

调节器

public class ProductController : Controller
{
 readonly IProductRepository repository;

 //inject dependency
 public ProductController(IProductRepository repository)
 {
 this.repository = repository; 
 }

 public ActionResult Index()
 {
 var data = repository.GetAll();
 return View(data);
 }
 //Other Code
}

我的问题

存储库模式和DI之间有什么区别

结构注射的优点是什么？

欣赏如果有人能够解释Bootstrap.cs文件代码和Controller类代码,并提供最大可能的细节.

代码来源:http://www.dotnet-tricks.com/Tutorial/dependencyinjection/632V140413-Dependency-Injection-in-ASP.NET-MVC-4-using-Uni​​ty-IoC-Container.html