asp.net-mvc - ASP.NET MVC 下拉编辑器模板

Question

我正在寻找使用 MVC 创建下拉列表编辑器模板的最佳方法。似乎有各种各样的方法，但我找不到最好的方法，每个人似乎都不一样。我也将 MVC3 与 Razor 一起使用，因此首选使用这种方法的方法。

Answer 1

有很多方法，说哪个最好是主观的，并且可能不适用于您忘记在问题中描述的场景。这是我的方法:

模型:

public class MyViewModel
{
    public string SelectedItem { get; set; }
    public IEnumerable<Item> Items { get; set; }
}

public class Item
{
    public string Value { get; set; }
    public string Text { get; set; }
}

Controller :

public class HomeController : Controller
{
    public ActionResult Index()
    {
        var model = new MyViewModel
        {
            // TODO: Fetch this from a repository
            Items = new[] 
            {
                new Item { Value = "1", Text = "item 1" },
                new Item { Value = "2", Text = "item 2" },
                new Item { Value = "3", Text = "item 3" },
            }
        };
        return View(model);
    }

    [HttpPost]
    public ActionResult Index(MyViewModel model)
    {
        if (!ModelState.IsValid)
        {
            // redisplay the view to fix validation errors
            return View(model);
        }

        // TODO: The model is valid here => 
        // perform some action using the model.SelectedItem 
        // and redirect to a success page informing the user
        // that everything went fine
        return RedirectToAction("Success");
    }
}

查看 ( ~/Views/Home/Index.cshtml ):

@model MyApp.Models.MyViewModel

@{ Html.BeginForm(); }
    @Html.EditorForModel()
    <input type="submit" value="OK" />
@{ Html.EndForm(); }

编辑器模板( ~/Views/Home/EditorTemplates/MyViewModel.cshtml ):

@model MyApp.Models.MyViewModel

@Html.DropDownListFor(x => x.SelectedItem, 
    new SelectList(Model.Items, "Value", "Text"))