你将如何验证在ASP.Net MVC 2复选框？ [英] How would you validate a checkbox in ASP.Net MVC 2?

问题描述

使用MVC2，我有一个简单的视图模型包含上视图为复选框呈现一个布尔领域。我想验证用户选中的复选框。在我的视图模型的[必需]属性似乎并没有这样的伎俩。我相信这是因为未选中复选框表单字段实际上并没有在POST过程中传回，因此验证不会在其上运行。

Using MVC2, I have a simple ViewModel that contains a bool field that is rendered on the view as a checkbox. I would like to validate that the user checked the box. The [Required] attribute on my ViewModel doesn't seem to do the trick. I believe this is because the unchecked checkbox form field is not actually transmitted back during the POST, and therefore the validation doesn't run on it.

有处理勾选需要，在MVC2验证的标准方式？或者说我要为它编写自定义验证？我怀疑上面提到的原因，自定义验证不会得到任何执行。我是停留在我的控制器明确检查呢？这似乎凌乱...

Is there a standard way to handle checkbox "required" validation in MVC2? or do I have to write a custom validator for it? I suspect the custom validator won't get executed either for the reason mentioned above. Am I stuck checking for it explicitly in my controller? That seems messy...

任何指导，将AP preciated。

Any guidance would be appreciated.

斯科特

编辑度：正如下面的评论中指出，这是一个同意我们的条款复选框的类型，因此不勾选是一个有效的答案，所以我真的很想找一个被选中验证。

EDIT FOR CLARITY: As pointed out in comments below, this is a "agree to our terms" type of checkbox, and therefore "not checked" is a valid answer, so I'm really looking for an "is checked" validation.

推荐答案

自定义验证程序是要走的路。我会后我的code这是我用来验证用户接受的条款...

a custom validator is the way to go. I'll post my code which I used to validate that the user accepts the terms ...

public class BooleanRequiredToBeTrueAttribute : RequiredAttribute
{
    public override bool IsValid(object value)
    {
        return value != null && (bool)value;
    }
}

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