Question

运行页面时，范围上的验证会显示所需的错误但会忽略true true和false false会在勾选复选框时返回错误消息，无论范围设置为什么。例如，当范围设置为true并勾选复选框时，它会给出一条错误消息，当它没有勾选时，它允许我继续没有错误。当range为false时，它的行为完全相同。

未勾选时应该出错

<p>
Please confirm you have read the <a href="~/Downloads/AccreditationAndSTCompanyEligibility.pdf" target="_blank">eligibility document.</a>
 @Html.CheckBoxFor(m => m.ConfirmEligibilityDocument)
@Html.ValidationMessageFor(m => m.ConfirmEligibilityDocument)

</p>

[Range(typeof(bool), "true", "true", ErrorMessage = "You must accept our Terms & Conditions.")]
public bool ConfirmEligibilityDocument { get; set; }

Answer 1

请尝试用

替换您的范围属性

[MustBeTrue(ErrorMessage = "You must accept our Terms & Conditions")]

您将需要该

的自定义属性

[AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = false)]
public class MustBeTrueAttribute : ValidationAttribute
{
  public override bool IsValid(object value)
  {
    return value != null && value is bool && (bool)value;
  }
}

此解决方案提供了in this article

我不知道你的ptoject是如何设置的，但这是我的测试代码，它完美无缺

- Index.chtml

 @using (Html.BeginForm())

{ @ Html.ValidationSummary（真）

   <p>please confirm that you have...</p>
  @Html.CheckBoxFor(m => m.ConfirmEligibilityDocument)
  @Html.ValidationMessageFor(m => m.ConfirmEligibilityDocument)

  <input type="submit" value="submit"/>

}

- HomeController.cs

 public class HomeController : Controller
{

    [HttpGet]
    public ActionResult Index()
    {
        ViewBag.Message = "Modify this template to jump-start your ASP.NET MVC application.";

        var t = new TestBool();


       return View();
    }

    [HttpPost]
    public ActionResult Index(TestBool t)
    {

        return View("Index",t);
    }


}

- TestBoll.cs - 这是我的模型

 public class TestBool
{

    [MustBeTrue(ErrorMessage = "Must be accepted")]
    public bool ConfirmEligibilityDocument { get; set; }
}

- MustBeTrueAttribute.cs - 这是属性类

 [AttributeUsage(AttributeTargets.Property, AllowMultiple = false, Inherited = false)]
public class MustBeTrueAttribute : ValidationAttribute
{
    public override bool IsValid(object value)
    {
        return value != null && value is bool && (bool)value;
    }
}

范围不工作我试图在mvc中未选中复选框时显示错误消息

1 个答案: