[HttpPost]

This is an example of how to have an action that is only called upon a page post and this code also suggests that one may get back something in the shape of a model from a form in lieu of a FormCollection.

public ActionResult Create()

{

   FooModel fooModel = getWhatever();

   return View(fooModel);

}

   

[HttpPost]

public ActionResult Create(FooModel fooModel)

{

   Whatever...