@using (Html.BeginForm("NewUser","Admin"))
        {
             <select multiple="" id="inputRole" class="form-control" size="6" name="inputRole">
             @foreach (var item in Model.roller)
             {
                 <option>@item.Name</option>
             }
             </select>
         }

如何在Controller中获取所选值？

[HttpPost]
    public ActionResult NewUser(FormCollection formCollection)
    {
        String roleValue1 = formCollection.Get("inputRole");
    }

这给了我一个空值.