model验证（验证登录、注册...）

public class Student
    {
        public int ID { get; set; }

        [Required(ErrorMessage = "学生姓名不能为空")]
        [StringLength(4, ErrorMessage = "最多只能输入4个字符")]
        public string Name { get; set; }

        [Required(ErrorMessage = "性别不能为空")]
        public int Sex { get; set; }

        [Required(ErrorMessage = "年龄不能为空")]
        [Range(10, 30, ErrorMessage = "年龄必须在10到30岁之间")]
        public uint Age { get; set; }

        [Required]
        public string Telphone { get; set; }

        public string stuNumber { get; set; }

        [Required(ErrorMessage = "请输入账号")]
        [Remote("CheckUserName", "Student", ErrorMessage = "该账号已注册")]
        public string UserName { get; set; }

        [Required(ErrorMessage = "请输入密码")]
        //[RegularExpression(@"^.[*A-Za-z0-9w_-]+.*$", ErrorMessage = "密码格式有误")]
        public string Password { get; set; }

        [Required(ErrorMessage = "请输入密码")]
        [System.Web.Mvc.Compare("Password",ErrorMessage="密码不一致")]
        public string RePassword { get; set; }
    }