public class Baz
{
    private readonly IBar bar;
    public Baz(IBar bar)
    {
        this.bar = bar;
    }
}

var foo = new Foo();
var bar = new Bar(foo);

SomeFrameworkClass.SetControllerFactory(() => { // точка входа
    var baz = new Baz(bar);
    return new Controller(foo, baz);
});

public class Baz
{
    private readonly IBar bar = App.container.Resolve<IBar>();
}