Adding the 'required' attribute with DropDownListFor

Question

I have this:

@Html.DropDownListFor(x => x.SelectedValue, new SelectList(Model.SomeList, "Value", "Text"))

And would like it to be rendered as this:

<select required>
    <option>...</option>
    ...

How would I do this?

Answer 1

Use this:

@Html.DropDownListFor(x => x.SelectedValue, new SelectList(Model.SomeList, "Value", "Text"), new {required = "required"})

It won't achieve the shorthand <select required but it should have the same effect. Although I've found you could achieve that exact element using

@Html.DropDownListFor(x => x.SelectedValue, new SelectList(Model.SomeList, "Value", "Text"), new {required = (string)null})

Which is a little ugly.