Entlib 验证语法是否只接受数字月份？

Question

我有一个这样定义的枚举：

Private Enum AllowedMonthNumbers
    _1
    _2
    _3
    _4
    _5
    _6
    _7
    _8
    _9
    _10
    _11
    _12
End Enum

然后属性验证器定义为：

<TypeConversionValidator(GetType(Int32), MessageTemplate:="Card expiry month must be numeric.", Ruleset:="CreditCard")> _
<EnumConversionValidator(GetType(AllowedMonthNumbers), MessageTemplate:="Card expiry month must be between 1 and 12.", Ruleset:="CreditCard")> _

验证需要“_#”，因为当我删除 TypeConversionValidator 时，它会通过将值设置为“_3”或枚举中的任何其他数字。

我需要的是仅接受 b/t 1-12，并且仅在枚举中包含数字值是行不通的。

有什么建议吗？

谢谢。

更新

我用 RangeValidator 替换了 EnumConversionValidator，并尝试将参数设置为“1”，但收到以下错误：

<RangeValidator(1, RangeBoundaryType.Inclusive, 12, RangeBoundaryType.Inclusive, MessageTemplate:="..."> 

但是，现在出现以下错误：

System.Web.Services.Protocols.SoapException : System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.ArgumentException: Object must be of type Int32.
   at System.Int32.CompareTo(Object value)
   at Microsoft.Practices.EnterpriseLibrary.Validation.Validators.RangeChecker`1.IsInRange(T target)
   at Microsoft.Practices.EnterpriseLibrary.Validation.Validators.RangeValidator`1.DoValidate(T objectToValidate, Object currentTarget, String key, ValidationResults validationResults)
   at Microsoft.Practices.EnterpriseLibrary.Validation.Validator`1.DoValidate(Object objectToValidate, Object currentTarget, String key, ValidationResults validationResults)
   at Microsoft.Practices.EnterpriseLibrary.Validation.Validators.AndCompositeValidator.DoValidate(Object objectToValidate, Object currentTarget, String key, ValidationResults validationResults)
   at Microsoft.Practices.EnterpriseLibrary.Validation.Validators.ValueAccessValidator.DoValidate(Object objectToValidate, Object currentTarget, String key, ValidationResults validationResults)
   at Microsoft.Practices.EnterpriseLibrary.Validation.Validators.AndCompositeValidator.DoValidate(Object objectToValidate, Object currentTarget, String key, ValidationResults validationResults)
   at Microsoft.Practices.EnterpriseLibrary.Validation.Validators.GenericValidatorWrapper`1.DoValidate(T objectToValidate, Object currentTarget, String key, ValidationResults validationResults)
   at Microsoft.Practices.EnterpriseLibrary.Validation.Validator`1.Validate(T target, ValidationResults validationResults)
   at Microsoft.Practices.EnterpriseLibrary.Validation.Validation.Validate[T](T target, String[] rulesets)
   at ....

Answer 1

RangeValidator 只能处理基本类型，例如 int、float、double、decimal。因为您在构造函数中提供了一个整数，所以它会尝试将该 int 与您的枚举相匹配，这将失败，因为 VAB 使用 Object.Compare(object) 方法。

尝试使用不必将数字范围定义为枚举的设计。尝试使用简单的整数字段。痛苦少得多。