Question

我有这个：

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

并希望将其呈现为：

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

我该怎么做？

Answer 1

使用此：

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

它不会达到速记<select required但它应该具有相同的效果。虽然我发现你可以使用

来实现那个确切的元素

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

哪个有点难看。

Answer 2

VB.NET

@Html.DropDownListFor(Function(Model) Model.ProgramTypeId, New SelectList(Model.allPrograms, 
"ProgramTypeId", "ProgramName"), "Select Program....", 
New With {Key .class = "form-control", Key .required = "Required"})

Answer 3

尝试以下

@Html.DropDownList("PlanType", null, "Select Plan Type", htmlAttributes: new { @class = "form-control", required = "Select Plan Type" })

使用DropDownListFor添加'required'属性

3 个答案: