n层体系结构中的依赖注入-如何处理

Question

I want to build an N-Tier application.

Client (WebJson-MVC, WebSoap-WCF)
API
BLL
DAL

Client depends on API that depends on BLL that depends in DAL .
So lets say that I want to inject API to the clients(WebJson-MVC, WebSoap-WCF) .
Since there are 2 clients, what is the best way to do the injection? To which project should I import the Dependency injection frame work?
What is the workaround for this?
Where do I suppose to initialize the context? IApplicationContext ctx = ContextRegistry.GetContext();

Edit 1
If I will create the dependency injection in the WebJson-MVC and I want to inject the bll to the api don't I couple the MVC with the BLL, isnt that bad to have the bll and the client tidely coupled? Also, how do I suppose to inject the API to WebSoap-WCF?

Thanks

Answer 1

To the WebJson-MVC framework, without question. Initialization in the MVC framework would be in the ApplicationStart() of the Global.asax.cs file.