Question

I am new to using dependency injection, and am trying on Ninject. As I am exploring the function of Ninject Factory, there is something that puzzled me.

From https://github.com/ninject/ninject.extensions.factory/wiki/Factory-interface,

public class Foo
{
    readonly IBarFactory barFactory;

    public Foo(IBarFactory barFactory)
    {
        this.barFactory = barFactory;
    }

    public void Do()
    {
        var bar = this.barFactory.CreateBar();
        ...
    }
}

public interface IBarFactory
{
    Bar CreateBar();
}

We can create Bar using

       var bar = this.barFactory.CreateBar();

But what approach should we take to create an instance of Foo?

Answer 1

You need to do exactly one kernel.Get<>() in the composition root of your application.