Question

I’m starting out with Dependency Injection and am having some trouble injecting a dependency into a base class.

I have a BaseController controller which my other controllers inherit from. Inside of this base controller I do a number of checks such as determining if the user has the right privileges to view the current page, checking for the existence of some session variables etc.

I have a dependency inside of this base controller that I’d like to inject using Ninject however when I set this up as I would for my other dependencies I’m told by the compiler that:

Error 1 ‘MyProject.Controllers.BaseController’
does not contain a constructor that
takes 0 argument

This makes sense but I’m just not sure how to inject this dependency. Should I be using this pattern of using a base controller at all or should I be doing this in a more efficient/correct way?

Answer 1

your BaseController constructor should be like this

BacseConctoller(Info info)
{
    this.info = info
}

then for all inheritence class
their constructor

ChildController(Info info):base(info)
{
}

in this case you can inject Info object to the base controller class