Build an empty MVC DropdownListFor for a Cascade Sub-List

Question

I would like to build an empty Dropdownlistfor to received the results of a previous Dropdownlisfor selection:

The actual view:

Answer 1

Found a solution that I think is the best because it as no service call to build the dropdroplist empty and it's strongly typed:

@Html.DropDownListFor(m => m.Model_Id, Enumerable.Empty(), HeelpResources.DropdownlistModelFirstRecord)