c# - 在 asp.net mvc 中对 EditorFor 的客户端验证

Question

我有一个包含三个下拉列表（mm、dd、yyyy）的日期编辑器模板。下面是相同的类，其中包含一些正常工作的验证

public class DateDDL
    {
        public IEnumerable<SelectListItem> Days { get; set; }
        public IEnumerable<SelectListItem> Months { get; set; }
        public IEnumerable<SelectListItem> Years { get; set; }

        [Attributes.DateDDLValidation("Day", "Month", "Year", ErrorMessage = "Select day")]
        public int Day { get; set; }

        [Attributes.DateDDLValidation("Day", "Month", "Year", ErrorMessage = "Select month")]
        public int Month { get; set; }

        [Attributes.DateDDLValidation("Day", "Month", "Year", ErrorMessage = "Select year")]
        public int Year { get; set; }
}

但是现在我必须在模型类中为同一个编辑器编写一个验证，如下所示

  public partial class User
    {
        public DateDDL DOBDDL { get; set; }

        [pmrms.Attributes.DateGreaterThanToday(ErrorMessage="testting")]
        public DateDDL JoinedOnDDL { get; set; }
}

但是对此的客户端验证无法设置或无法正常工作。GetClientValidationRules 方法未在自定义验证器类中加载

 protected override ValidationResult IsValid(object value, ValidationContext validationContext)
        {
            return new ValidationResult(ErrorMessage);
        }
        public IEnumerable<ModelClientValidationRule> GetClientValidationRules(ModelMetadata metadata, ControllerContext context)
        {
            return new[] { new ModelClientValidationDateGreaterThanToday(ErrorMessage) };
        }
        public class ModelClientValidationDateGreaterThanToday : ModelClientValidationRule
        {
            public ModelClientValidationDateGreaterThanToday(string errorMessage)
            {
                ErrorMessage = errorMessage; 
            }
        }