mvc後臺校驗 通過打標籤的方式

    public int Id { get; set; }
         [Required(ErrorMessage = "*")]
        [StringLength(5,ErrorMessage="超過長度了！")]

        public string Name { get; set; }
        [Required(ErrorMessage = "*")]
        [StringLength(2, ErrorMessage = "超過長度了！")]

        public string Sex { get; set; }
        [Required(ErrorMessage = "*")]
        [Range(18,120,ErrorMessage="年齡必須符合條件")]
        public int Age{ get; set; }
        [Required(ErrorMessage = "*")]
        [EmailAddress(ErrorMessage="不符合email格式")]
        public string Email { get; set; }