EF架构--FluentValidation的实际用法

        /// 
/// 机构ＩＤ/// 
[DisplayName("机构ID")]public int AgentId { get; set; }/// 
/// 机构名称/// 
[DisplayName("机构名称")]
        [MaxLength(128)]public string AgentName { get; set; }/// 
/// 机构负责人/// 
[DisplayName("机构负责人")]
        [MaxLength(128)]public string AgentUser { get; set; }

   public class CreateUserEventValidator : AbstractValidator{public CreateUserEventValidator()
        {
            RuleFor(command => command.UserName).NotEmpty().Length(5, 20).WithMessage("用户名升序为5－20字符！");
            RuleFor(command => command.Email).NotEmpty().EmailAddress().WithMessage("不是有效的Email！");
            RuleFor(command => command.BirthDay).NotEmpty().Must(i => i < DateTime.Now).WithMessage("你的年紀太小了！");
        }
    }

   
   BusManager.Instance.Subscribe( ValidatorDecorator(
 UserEventHandler(),

   BusManager.Instance.Subscribe( LoggerDecorator( CreateUserEvent { UserName =  });

    /// 
/// 验证装饰器/// 
///     [Serializable]public class ValidatorDecorator   : IBusHandlerwhere TEvent : IBusData
    {/// 
/// 要被装饰的处理程序/// 
private readonly IBusHandler _inner;/// 
/// 校验装饰器集合/// 
private readonly IValidator[] _validators;/// 
/// 初始化/// 
/// 要被装饰的处理程序/// 装饰器public ValidatorDecorator(IBusHandler inner, params IValidator[] validators)
        {
            _inner = inner;
            _validators = validators;
        }public void Handle(TEvent evt)
        {var failures = _validators
                           .Select(v => v.Validate(evt))
                           .SelectMany(result => result.Errors)
                           .Where(error => error != null)
                           .ToList();if (failures.Any())
            {throw new ValidationException("实体校验失败", failures);
            }

            _inner.Handle(evt);
        }
    }