How to use a factory with Dependecy Injection without resorting to using Service Locator pattern

Question

I have a GUI application. In it I allow a user to select from a container-provided list of algorithms. Each algorithm will be kicked off as a background task in another view.

Answer 1

Best you create a factory interface like this

public interface IFooFactory
{
    IFoo CreateFoo(int someParameter);
}

For Ninject 2.3 see https://github.com/ninject/ninject.extensions.factory and let it be implemented by Ninject by adding the following configuration.

Bind().AsFactory();

For 2.2 do the implementation yourself. This implementation is part of the container configuration and not part of your implementations.

public class FooFactory: IFooFactory
{
    private IKernel kernel;
    public FooFactory(IKernel kernel)
    {
        this.kernel = kernel;
    }

    public ISession CreateFoo(int someParameter)
    {
        return this.kernel.Get(
            new ConstructorArgument("someParameter", someParameter));
    }
}