MVC Razor get option value from select with FormCollection

问题

My view has a Select with elements(options) from my ViewModel.

        @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>
         }

How can i get the selected value in my Controller?

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

This gives me a null value.

回答1:

Try this to get the value of control in the formcollection

formCollection["inputRole"]

Your code becomes

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

回答2:

You can simply accesss your form field by its name in that way

    String role = formCollection["inputRole"];

来源：https://stackoverflow.com/questions/21303236/mvc-razor-get-option-value-from-select-with-formcollection