DropDownListFor Not Selecting Value

Question

I\'m using the DropDownListFor helper method inside of an edit page and I\'m not having any luck getting it to select the value that I specify. I noticed a similar question

Answer 1

While not addressing this question - it may help future googlers if they followed my thought path:

I wanted a multiple select and this attribute hack on DropDownListFor wasn't auto selecting

Html.DropDownListFor(m => m.TrainingLevelSelected, Model.TrainingLevelSelectListItems, new {multiple= "multiple" })

instead I should have been using ListBoxFor which made everything work

Html.ListBoxFor(m => m.TrainingLevelSelected, Model.TrainingLevelSelectListItems)