多选@Html.DropDownList不会在部分视图中删除

Question

MVC4， 在部分视图下拉列表中不会下拉。我做错了什么？ 谢谢

MyView.cshtml

 @Html.RenderPartial("MyPartialView1.cshtml", model);

MyPartialView1.cshtml

@model List<MyClass1>
@{
   SelectList list1 = MyHelper.GetList1();
   MultiSelectList mltpList= new MultiSelectList(lst1, "Value", "Text");
 }
............
<div>
    <label for="dd1">My Dropdown:</label>
    @Html.DropDownList("dd1", mltpList, null, new { multiple = "multiple", id = "dd1" })
</div>

Answer 1

尝试使用Html.ListBox代替。像这样：

@Html.ListBox("dd1", mltpList, new { id = "dd1" })