MVC3 Html。具有静态和动态值的DropDownListFor。

I'd like to populate a Html.DropDownListFor with both static and dynamic values in my controller. I can't seem to figure out how to make this work. I've tried a few different approaches, but most center around (1) define the static values in a variable, (2) try to append the dynamic values (3) pass all values via the viewModel to my partial view.I'd like to populate a Html.DropDownListFor wit