FluentValidation

  RuleFor(o => o.RoomCount).GreaterThanOrEqualTo(1).WithMessage("房间数量只能为1-50").LessThanOrEqualTo(50).WithMessage("房间数量只能为1-50");

含义:RoomCount大于等于1并且小于等于50

GreaterThanOrEqualTo 大于等于

LessThanOrEqualTo 小于等于