Question

我的视图中有单选按钮列表，如下所示..

查看：

  <div class="deleteControls">
    <div class="labelHead">@Html.Label("Delete")</div>
    <div class="controlsAndLabels">@Html.RadioButtonFor(m => m.Submit,  MVC.Models.SubmitAction.DeleteItem) @Html.Label("Delete By Item")</div>
    <div class="controlsAndLabels">@Html.RadioButtonFor(m => m.Submit, MVC.Models.SubmitAction.DeleteVendor)  @Html.Label("Delete By Vendor")</div>
    <div class="controlsAndLabels" style="padding-left: 20px;">@Html.CheckBoxFor(m => m.IsCancelPageChecked, "Cancel Page") @Html.Label("Cancel Page")</div>
    <div class="controlsAndLabels">@Html.RadioButtonFor(m => m.Submit, MVC.Models.SubmitAction.DeleteMember) @Html.Label("Delete By Member")</div>
 </div>

这是我为该视图设计的模型，我在这里定义单选按钮的属性

型号：

    public SubmitAction Submit { get; set; }
    public bool IsCancelPageChecked { get; set; }

    [DeleteByItemValidator("ByItem")]
    [Display(Name = "By Item")]
    public string ByItem { get; set; }

    [Display(Name = "By Vendor")]
    public string ByVendor { get; set; }

    [Display(Name = "By Member")]
    public string ByMember { get; set; }

    [Display(Name = "Cancel Page")]
    public string CancelPage { get; set; }

和这个用于绑定单选按钮列表的枚举

public enum SubmitAction
{
    DeleteItem,
    DeleteVendor,
    DeleteMember

}

我正在服务器端使用自定义验证器进行自定义验证，如下所示

 public class DeleteByItemValidator : ValidationAttribute
 {
    public string DeleteByItemRadioButton { get; set; }

    public DeleteByItemValidator(string deleteByItemRadioButton)
    {
        this.DeleteByItemRadioButton = deleteByItemRadioButton;
    }

    protected override ValidationResult IsValid(object currentValue, ValidationContext validationContext)
    {
        if (IsRadionButtonSelected(validationContext, DeleteByItemRadioButton))
        {
            // here I am doing validaions
        }
        return ValidationResult.Success;
    }

    // this method is giving always false even if i selected one radio button 
    private bool IsRadionButtonSelected(ValidationContext validationContext, string PropertyToSelect)
    {
        Type iType = validationContext.ObjectInstance.GetType();
        object RadioButtonSelectedValue = iType.GetProperty(PropertyToSelect).GetValue(validationContext.ObjectInstance, null);//here I am getting null value 
        bool isChecked = Convert.ToBoolean(RadioButtonSelectedValue);
        return isChecked;
    }
}

我的问题是我没有检查单选按钮是否被选中，即使我选择单选按钮，此方法也会返回false值

 private bool IsRadionButtonSelected(ValidationContext validationContext, string PropertyToSelect)`

这种方式对于验证单选按钮选择是否正确，或者是否有其他方法请提出任何建议。

是否有人知道如何选择是否选择了单选按钮

非常感谢提前

Answer 1

据我了解，您尝试验证是否已选中单选按钮。为什么不将[Required]属性添加到public SubmitAction Submit { get; set; }属性并删除IsRadionButtonSelected方法？

Answer 2

您访问该媒体资源的验证码非常正确。它为null，因为您没有在视图中使用ByItem。而不是字符串使用布尔值。这应该有用。

更新

   @Html.RadioButtonFor(m => m.ByItem,  Model.ByItem) @Html.Label("Delete By Item")

    [DeleteByItemValidator("ByItem")]
    [Display(Name = "By Item")]
    public bool ByItem { get; set; }

Answer 3

如果没有自定义验证器，我会这么做。例如：

模型

public class Test3Model
{
    [Required]
    public SubmitAction  Submit { get; set; }
    public bool IsCancelPageChecked { get; set; }

}

public enum SubmitAction
{
    None,
    ByItem,
    ByVendor,
    ByMember 
}

查看

@using (Html.BeginForm("Test3","Form"))
{
    @Html.RadioButtonFor(m => m.Submit, SubmitAction.ByItem, Model.Submit== SubmitAction.ByItem ? new { Checked = "checked" } : null)
    @Html.RadioButtonFor(m => m.Submit, SubmitAction.ByVendor, Model.Submit== SubmitAction.ByVendor ? new { Checked = "checked" } : null ) 
    @Html.RadioButtonFor(m => m.Submit, SubmitAction.ByMember, Model.Submit== SubmitAction.ByMember ? new { Checked = "checked" } : null ) 


    @Html.ValidationSummary();
    <input type="submit"/>
}

控制器

    [HttpPost]
    public ActionResult Test3(Test3Model model)
    {
        if (ModelState.IsValid && model.Submit != SubmitAction.None)
        {
            //some actions
        }

        return View("Test3", model); 
    }

Answer 4

从它的外观来看，在你的对象上设置的唯一属性是Submit，ByItem等。从不使用。您可以删除它们，并将自定义验证程序更改为仅使用“提交”属性。

无法使用mvc检查自定义验证中的单选按钮选定值

4 个答案: