Message in Chinese (Simplified) (中文(简体))
此类尚未实现 IsValid(object value)。首选入口点是 GetValidationResult()，并且类应重写 IsValid(object value, ValidationContext context)。
Unlocalized message
IsValid(object value) has not been implemented by this class. The preferred entry point is GetValidationResult() and classes should override IsValid(object value, ValidationContext context).
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