Asp.net mvc 模型视图中的下拉列表

在我看来，这是行不通的

@model PASKAN.Web.Security.Models.User
<p class="lan-name"><label>Language</label>@Html.DropDownListFor(o => o.Language, Enum.GetValues(typeof(Enum)).Cast<Enum>().Select(x => new SelectListItem { Text = x.ToString(), Value = ((int)x).ToString() }))</p>

我的控制器看起来像这样

public ActionResult Edit()
{
    Models.User user = new User(Convert.ToInt32(User.Identity.Name));
    ViewBag.Languages = Enum.GetNames(typeof(Language)).ToList();
    return View (user);
}

---

您在ViewBag中填充了这些语言，因此请在视图中使用它们：

@Html.DropDownListFor(o => o.Language, (IEnumerable<SelectListItem>)ViewBag.Languages)

但既然你提到了视图模型，我认为你误用了这个术语。在您的情况下，我看不到视图模型的任何痕迹。视图模型应如下所示：

public class MyViewModel
{
    public string Language { get; set; }
    public IEnumerable<SelectListItem> Languages { get; set; }
}

在强类型视图中：

@model MyViewModel
...
@Html.DropDownListFor(x => x.Language, Model.Languages)

public class MyViewModel
{
    public string Language { get; set; }
    public IEnumerable<SelectListItem> Languages { get; set; }
}

public ActionResult Edit()
{
    var user = new User(Convert.ToInt32(User.Identity.Name));
    var viewModel = new MyViewModel
    {
        Language = user.Language,
        Languages = Enum
            .GetNames(typeof(Language))
            .Select(x => new SelectListItem { Value = x, Text = x })
            .ToList()
    };
    return View (viewModel);
}

@model MyViewModel
...
@Html.DropDownListFor(x => x.Language, Model.Languages)