Why does the model binder need an empty constructor

Question

I need some help with some fundamentals here...

I have this controller that serves up my view with an instance of a class (at least that\'s how I think it works). So

Answer 1

I am a little confused by the question but instead have you tried this:

[HttpPost] 
public ActionResult Index(MyModel foo){
  if(foo.someString == "laaaa")
    return RedirctToAction("End", "EndCntrl", foo);
  else
    throw new Exception();
}

You only need a parameterless constructor if you added a parameterized constructor.

Ex: MyObject item = new MyObject();