MVC DropDownList不从模型中选择值

Question

我已经阅读了这个问题ASP.NET MVC DropDownList没有从模型和答案中选择值,但我不知道我的问题的解决方案.

这是我的看法:

@foreach (var adjusterLanguages in Model.adjusterLanguages)
{
    <div class="editor-field row">
        @Html.DropDownListFor(model => Model.adjusterLanguages[i].languageID,
                              (SelectList)ViewBag.ForeignLanguages) 
        @Html.ValidationMessageFor(model =>Model.adjusterLanguages[i].languageID)
    </div>

    <div style="clear: left;"></div>

    i++;
}

我可以确认正在填充模型数据(来自我的控制器):

model.adjusterLanguages = adjLangs;

那么,如何在模型发送到视图时选择项目？

生成的html如下:

<div class="editor-field row">
    <select id="adjusterLanguages_0__languageID" name="adjusterLanguages[0].languageID"><option value="">--Select--
        </option>
        <option value="94c5be88-814e-4719-9784-587eb88aa975">Afrikanns</option>
        <option value="37b7bf71-7f4e-47c2-8b81-652b0d63dbcb">Albanian</option>
        <option value="c94d6d85-0ba2-47d7-932e-2a61feba37b3">Arabic</option>
        <!-- ... truncated for brevity ... -->
    </select> 
    <span class="field-validation-valid" data-valmsg-for="adjusterLanguages[0].languageID" data-valmsg-replace="true"></span>
</div>
<div style="clear: left;"></div>
<div class="editor-field row">
     <select id="adjusterLanguages_1__languageID" name="adjusterLanguages[1].languageID">
          <option value="">--Select--</option>
          <option value="94c5be88-814e-4719-9784-587eb88aa975">Afrikanns</option>
          <option value="37b7bf71-7f4e-47c2-8b81-652b0d63dbcb">Albanian</option>
          <option value="c94d6d85-0ba2-47d7-932e-2a61feba37b3">Arabic</option>
          <!-- ... truncated for brevity ... -->
     </select> 
     <span class="field-validation-valid" data-valmsg-for="adjusterLanguages[1].languageID" data-valmsg-replace="true"></span>
</div>

Answer 1

我找到了答案!感谢大家的帮助.当我将代码更改为以下代码时,它可以正常工作.代码只是指定选定的值:

@Html.DropDownListFor(
   model => Model.adjusterLanguages[i].languageID, 
   new SelectList(
       ViewBag.ForeignLanguages, "Value", "Text", 
       @Model.adjusterLanguages[i].languageID))