Inject different classes that implement the same interface using Ninject

Question

I am implementing the builder design pattern to construct different kinds of graph objects to be displayed on a WPF UI. I am using Ninject as my IOC container. However, I am try

Answer 1

If you're just planning to use service location, as in your examples, then named bindings work fine, as per Garys answer.

A better approach, however, is to use constructor injection, and use attributes. For exampl, from the ninject wiki:

Bind().To().Named("Strong");
Bind().To().Named("Weak"); 

...

class WeakAttack {
    readonly IWeapon _weapon;
    public([Named("Weak")] IWeapon weakWeapon)
        _weapon = weakWeapon;
    }
    public void Attack(string victim){
        Console.WriteLine(_weapon.Hit(victim));
    }
}

Based on your comment to Gary, you're (strangely enough) stumbling into territory similar to what I asked a question about a few hours ago. See Remo's answer here: Using WithConstructorArgument and creating bound type

You would use When condition to define when to create the correct instance.