实现 DataAnnotations 验证属性时，我应该调用 base.IsValid() 吗？

发布于 2024-09-11 15:21:31 字数 643 浏览 10 评论 0原文

我正在创建一个 DataAnnotations 验证属性，用于使用与 jQuery 相同的模式来匹配电子邮件（是的，它必须以前完成过，但我找不到它......）并且我不确定我到底在做什么应该覆盖以及是否应该调用基类上的方法。目前我有这样的实现：

public class EmailAttribute : ValidationAttribute
{
    const string emailPattern = // long regex string
    private Regex emailRegex = new Regex(emailPattern, RegexOptions.Compiled);

    public override bool IsValid(object value)
    {
        return (value is string) && 
            emailRegex.IsMatch((string)value) && 
            base.IsValid(value);

    }
}

是否需要重写其他方法才能使其正常工作？我应该像上面那样调用 base.IsValid(value) ，还是这样做是多余的/完全错误的？

欢迎任何评论。

原文

I'm creating a DataAnnotations validation attribute for matching emails using the same pattern as jQuery (yes, it must have been done before, but I can't find it...) and I'm not sure on exactly what I'm supposed to override and whether methods on the base classes should be called or not. Currently I have this implemnetation:

public class EmailAttribute : ValidationAttribute
{
    const string emailPattern = // long regex string
    private Regex emailRegex = new Regex(emailPattern, RegexOptions.Compiled);

    public override bool IsValid(object value)
    {
        return (value is string) && 
            emailRegex.IsMatch((string)value) && 
            base.IsValid(value);

    }
}

Is there any other methods I need to override for this to work correctly? Should I call base.IsValid(value) as above, or is it redundant/flat out wrong to do so?

Any comments are welcome.

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灯下孤影 2024-09-18 15:21:31

您不需要覆盖其他任何内容，也不应该调用 base.IsValid。

仅供参考：您可能会考虑为此继承 RegularExpressionAttribute，以便选择客户端选项。例如...

public class EmailAttribute : RegularExpressionAttribute
{
  public EmailAttribute() :
    base(@"^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Za-z0-9]+@((\w+\-+)|(\w+\.))*\w{1,63}\.[a-zA-Z]{2,6}$")
  {
    ErrorMessage = "Please enter a valid email address";
  }  
}

此外，这可能对您有用：

http://foolproof.codeplex.com/

这是一组本来应该在 MVC 中的验证器。做得很好，来源很有启发性。五月份以来就没有动过，希望现在还活跃。

You don't need to override anything else and you should not call base.IsValid.

FYI: You might consider inheriting from RegularExpressionAttribute for this so that you pick up client side options. For example...

public class EmailAttribute : RegularExpressionAttribute
{
  public EmailAttribute() :
    base(@"^(([A-Za-z0-9]+_+)|([A-Za-z0-9]+\-+)|([A-Za-z0-9]+\.+)|([A-Za-z0-9]+\++))*[A-Za-z0-9]+@((\w+\-+)|(\w+\.))*\w{1,63}\.[a-zA-Z]{2,6}$")
  {
    ErrorMessage = "Please enter a valid email address";
  }  
}

Also, this may be useful to you:

http://foolproof.codeplex.com/

It's a set of validators that should have been in MVC. Nicely done and the source is instructive. Hasn't moved since May, hoping it's still active.

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