mvc model数据验证

 创建UserInfo类

   public class UserInfo

    {

        [Required(ErrorMessage="用户名必填")]

        [MinLength(6, ErrorMessage = "用户名至少6位")]

        public string username { set; get; }

         [Required(ErrorMessage = "密码必填")]

        public string password { set; get; }

        [Compare("password", ErrorMessage = "两次密码输出不相同")]

        public string repassword { set; get; }

        public string age { set; get; }

    }

    /************  控制器    ************/

  public ActionResult Add(UserInfo ui)
        {
           
            if (ModelState.IsValid) //模型验证全部通过
            {
               //添加代码
            }

            return View("~/views/home/index.cshtml");

     }

      /************   视图    ************/