Question

我对MVC很新。我有以下Razor代码：

@using (Html.BeginForm()) {
    @Html.ValidationSummary(true)

    <fieldset style="margin:5px">
        <legend>List a Bicycle for Sale</legend>

        <div class="editor-label">
            @Html.LabelFor(model => model.BicycleManfacturer)
        </div>
        <div class="editor-field">
            @Html.DropDownList("ManufacturerList")
        </div>

        ....
        ....


        <div class="float-right">
            <input type="submit" value="List Bike" />
        </div>
    </fieldset>
}

“ManufacturerList”是存储在ViewBag中的SelectedListItem列表（我不想为所有下拉列表创建模型）。它是通过这种方法构建的：

    private void HydrateManufacturerList()
    {
        var manufacturerList = (from row in db.BicycleManufacturer.ToList()
                                select new SelectListItem
                                {
                                    Text = row.Description,
                                    Value = row.BicycleManufacturerId.ToString()
                                }).ToList();
        manufacturerList.Add(new SelectListItem
        {
            Text = "-- Select Manufacturer --",
            Value = "0",
            Selected = true
        });
        ViewBag.ManufacturerList = manufacturerList.OrderBy(row => row.Text);
    }

我有以下代码在提交完成后调用：

    [HttpPost]
    public ActionResult Create(BicycleSellerListing bicyclesellerlisting)
    {
        bicyclesellerlisting.ListingDate = System.DateTimeOffset.Now;

        if (ModelState.IsValid)
        {
            db.BicycleSellerListing.Add(bicyclesellerlisting);
            db.SaveChanges();
            return RedirectToAction("Index");
        }

        return View(bicyclesellerlisting);
    }

当用户将视图发回我的控制器并执行此方法时，我无法想象如何从下拉列表中获取所选制造商。

Answer 1

使用

public ActionResult Create(BicycleSellerListing bicyclesellerlisting, FormCollection collection)
{ 
  ...

您可以获取所有输入，包括下拉所选项目，例如 collection [“ManufacturerList”] 或类似项目，具体取决于您的下拉列表名称。

MVC 4 - 如何从下拉列表中获取所选项目

1 个答案: