Question

我在ASP.NET MVC 4中遇到以下简单问题。我有一个带有选项列表的viewmodel（一个简单的键/值列表），以及一个应该具有所选值的对象。

我有以下内容，我使用foreach循环渲染列表，并使用RadioButtonFor显示值。但在帖子中，我没有得到任何回报。

如何修改我的代码，以便在帖子中获取所选选项的ID？

我有以下表格：

@using (Html.BeginForm("Credits","User",FormMethod.Post))
        {

            @Html.EditorFor(model => model.PurchaseAmount)

            <div>


                @foreach (var a in Model.PaymentMethods)
                {
                    <p>
                        @Html.RadioButtonFor(b=>b.PaymentMethods,)
                        @Html.RadioButtonFor(b => b.SelectedPaymentMethod, a.Id)  @a.Name
                    </p>
                }
            </div>


            <div class="form-group">
                <input type="submit" class="btn btn-success" value="@ViewRes.GoToPayment" />
            </div>
        }

我有以下viewmodel ：

 public class CreditsViewModel
    {
        public IEnumerable<PaymentMethodViewModel> PaymentMethods { get; set; }
        public PaymentMethodViewModel SelectedPaymentMethod { get; set; }

        public int PurchaseAmount { get; set; }

        public decimal Credit { get; set; }
        public decimal CreditLimit { get; set; }
    }

    public class PaymentMethodViewModel
    {
        public int Id { get; set; }
        public string Name { get; set; }
    }

邮政编码：

    [HttpPost]
    public ActionResult Credits(CreditsViewModel model)
    {
        string url = "";
        //string returnUrl = orderService.AddFunds(SecurityUtility.CurrentUser.Id, model.Funds);
        return Redirect(url);
    }

Answer 1

这应该足够了：

            @foreach (var a in Model.PaymentMethods)
            {
                <p>
                    @Html.RadioButtonFor(b => b.SelectedPaymentMethod, a.Id)  @a.Name
                </p>
            }

将SelectedPaymentMethod更改为int而不是PaymentMethodViewModel。

同时从视图模型中删除PaymentMethods并将其移至ViewBag，这可能会破坏模型绑定。

Answer 2

//Model.
public class TestRadiobutton
{
    public string Theme { get; set; }
}

  //Controller.
  public class HomeController : Controller
  {
    // GET: Home
    public ActionResult Index()
    {
        TestRadiobutton obj=null;
        if (TempData["MyObj"] != null)
        {
            obj = (TestRadiobutton)TempData["MyObj"];

        }

        return View(obj);
    }
    [HttpPost]
    public ActionResult Change(TestRadiobutton obj)
    {
        TempData["MyObj"] = obj;
        return RedirectToAction("Index");
    }
}


//view.
@model RadioButtonInMvc.Models.TestRadiobutton

 @{
    ViewBag.Title = "Index";
  }

@using (Html.BeginForm("Change", "Home", FormMethod.Post))
{

<div class="jumbotron">
    <div class="row">
        <div class="col-lg-6">
            @Html.RadioButtonFor(m => m.Theme, "Dark")
            <span>Dark Theme</span>
        </div>
        <div class="col-lg-6">
            @Html.RadioButtonFor(m => m.Theme, "Light")
            <span>Light Theme</span>
        </div>
        <div>
            <button type="submit" class="btn btn-primary">Save</button>
        </div>
        <label>@Html.DisplayFor(m => m.Theme)</label>
    </div>
</div>
}

如何从ASP.NET MVC中的radiobuttonfor中获取选定的值

2 个答案: