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我正在使用带有 C# 的 asp.net Razor。我正在尝试验证输入的值是否为货币，但我似乎无法正确执行。

这是在我的 PaymentModel 中：

  [Required]
  [DataType(DataType.Currency)]
  [DisplayFormat(DataFormatString = "{0:F2}", ApplyFormatInEditMode = true)]
  [Display(Name = "Payment Amount:")]
  public decimal Amount { get; set; }

这是我的预付款视图：

@model SuburbanCustPortal.Models.PaymentModel.PrePayment

@{
    ViewBag.Title = "Make a payment!";
}

<script>
$(function(){
  $("#AccountId").change(function(){
    var val=$(this).val();
    $("#currentBalance").load("@Url.Action("GetMyValue","Payment")", { custid : val });
    document.forms[0].Amount.focus();
  });
});
</script>

<h2>Make a Payment</h2>

  @using (Html.BeginForm("SendPayment", "Payment", FormMethod.Post))
  {
    @Html.ValidationSummary(true, "Please correct the errors and try again.")
    <div>
      <fieldset>
        <legend>Please enter the amount of the payment below:</legend>

        <div class="editor-label">
          Please select an account.
        </div>

        @Html.DropDownListFor(x => x.AccountId, (IEnumerable<SelectListItem>)ViewBag.Accounts)

        <div class="editor-label">
          @Html.LabelFor(m => m.AccountBalance)
        </div>
        <div class="editor-field">
          <label class="sizedCustomerDataLeftLabel" id="currentBalance">@Html.DisplayFor(model => model.AccountBalance)&nbsp;</label>
        </div>      

        <div class="editor-label">
          @Html.LabelFor(m => m.Amount)
        </div>
        <div class="editor-field focus">
          @Html.TextBoxFor(m => m.Amount, new { @class = "makePaymentText" })
          @Html.ValidationMessageFor(m => m.Amount)
        </div>

        <p>
          <input id="btn" class="makePaymentInput" type="submit" value="Pay Now"  onclick="DisableSubmitButton()"/>  
        </p>
      </fieldset>
    </div>
  }

This is my Prepayment ActionResult:

    [Authorize]
    public ActionResult PrePayment(PaymentModel.PrePayment model)
    {
      var list = new List<SelectListItem>();
      var custs = _client.RequestCustomersForAccount(User.Identity.Name);
      foreach (var customerData in custs)
      {
        var acctno = customerData.Branch + customerData.AccountNumber;
        var acctnoname = string.Format(" {0} - {1} ", acctno, customerData.Name);
        // msg += string.Format("*** {0} - {1} ***{2}", customerData.AccountId, acctnoname, Environment.NewLine);
        list.Add(new SelectListItem() { Text = acctnoname, Value = customerData.AccountId });
      }

      if (custs.Length > 0)
      {
        model.AccountBalance = String.Format("{0:C}", Decimal.Parse(custs[0].TotalBalance));
      }

      ViewBag.Accounts = list;
      return View(model);
    }

视图的帖子调用 SendPayment，这是我在视图开始时的检查：

    if (model.Amount == 0)
    {    
      ModelState.AddModelError("Amount", "Invalid amount.");
      return RedirectToAction("PrePayment", model);
    }

我似乎无法通过预付款来取回我从 AddModelError 发送的错误。我将其更改为：

    if (model.Amount == 0)
    {    
      ModelState.AddModelError("Amount", "Invalid amount.");
      return View("PrePayment", model);
    }

但它永远不会调用控制器并且屏幕错误，因为它没有预期的数据。

如何使用错误重定向回调用视图？

==== 附加信息 ====

这是我的预付款视图：

[Authorize]
public ActionResult PrePayment(PaymentModel.PrePayment model)
{
    var list = new List<SelectListItem>();
    var custs = _client.RequestCustomersForAccount(User.Identity.Name);
    foreach (var customerData in custs)
    {
      var acctno = customerData.Branch + customerData.AccountNumber;
      var acctnoname = string.Format(" {0} - {1} ", acctno, customerData.Name);
      // msg += string.Format("*** {0} - {1} ***{2}", customerData.AccountId, acctnoname, Environment.NewLine);
      list.Add(new SelectListItem() { Text = acctnoname, Value = customerData.AccountId });
    }

    if (custs.Length > 0)
    {
      var amt =String.Format("{0:C}", Decimal.Parse(custs[0].TotalBalance));
      model.AccountBalance = amt;
      decimal namt;
      if (decimal.TryParse(amt.Replace(",",string.Empty).Replace("$", string.Empty), out namt))
      {
        model.Amount = namt;
      }
    }
  ViewBag.Accounts = list;
  return View(model);
}
4

2 回答 2

2

有几个问题需要解决。

1.  return View("PrePayment", model);  
This will not call the controller, as the function name suggests, it only passing your object to the specified "View"(.cshtml file)

2.     return RedirectToAction("PrePayment", model);  
You will not persist modelstate data, because you are doing a redirect.

建议的工作流程将解决您的问题。至少它解决了我的问题。

1. Get the form to post to "PrePayment" instead of SendPayment and you will create a new method with the following signature and have all you validation logic in the method
[Authorize]
[HttpPost]
public ActionResult PrePayment(PaymentModel.PrePayment model)

2. If everything goes well then redirect to the success/send payment page depending on your requirement

3. If somehow you need to pass model object onto the next action. Use TempData like following. This will temporarily persist the data till the next action. Then it get disposed:
TempData["payment"]=model;
于 2012-12-11T02:55:16.813 回答
0

可能您应该向您的属性添加数据注释并使用ModelState.IsValid属性来验证它

[Required]
[DataType(DataType.Currency)]
[DisplayFormat(DataFormatString = "{0:F2}", ApplyFormatInEditMode = true)]
[Display(Name = "Payment Amount:")]
[Range(0.01, Double.MaxValue)]
public decimal Amount { get; set; }

在您的POST方法中，检查验证是否通过，如果没有将模型发送回视图。

[HttpPost]
public ActionResult SendPayment(PrePayment model)
{
  if(ModelState.IsValid)
  {
     //do the fun stuff
  }
  return View(model);
}
于 2012-12-10T21:00:14.960 回答