Model验证功能

2019-11-14 16:10:17

字体：大中小

来源：转载

供稿：网友

占位符

{0}对应属性

{1}对应minimum

{2}对应maximum

[StringLength(15, MinimumLength = 6, ErrorMessage = "密码长度必须在{2}和{1}之间")]

先创建一个资源文件

为了实现这种验证效果

资源文件里可以这样写

然后新建一个类，这个类主要实现验证和其它一些额外的属性，这个类是部分类，有加partial关键字，写注解别忘了加

System.ComponentModel.DataAnnotations命名空间

[MetadataType(typeof(Login_UserMetaData))]    public partial class Login_User    {        //验证需要用到        public class Login_UserMetaData        {            [Display(Name="用户名")]            [Required(ErrorMessageResourceName="Required",ErrorMessageResourceType=typeof(Resource))]            public string UserName { get; set; }            [Display(Name="密码")]            [Required(ErrorMessageResourceName = "Required", ErrorMessageResourceType = typeof(Resource))]            public string PassWord { get; set; }        }    }

然后控制器大概就需要这样的代码，记得action方法传进来的参数类型是类名，如果用string username这种形式，ModelState.IsValid将无效

[HttpPost]        public ActionResult Login(Login_User loginUser)        {            if (!ModelState.IsValid)            {//验证不通过返回                return View();            }            Login_User user=userManager.Login(loginUser.UserName, loginUser.Password);            if (user == null)            {//用户密码错误！                ViewBag.error = "用户名或密码错误！";                return View();            }            session["user"] = user;            return RedirectToAction("index", "home");        }

这样做了之后，就可以实现服务端验证了，但这样还不够，这里还需要使用客户端验证，这可以大大减轻服务器负担。

view中的代码如下：

@{    ViewBag.Title = "后台登陆";}@model Letter.Data.Model.Login_User<script src="~/Scripts/jquery.validate.min.js"></script><script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>@using(Html.BeginForm()){    <div>          <label for="username">用户名:</label>          @Html.TextBoxFor(u=>u.UserName) @Html.ValidationMessage("UserName")      </div>      <div>          <label for="password">密码:</label>          @Html.PasswordFor(u=>u.Password) @Html.ValidationMessage("Password")    </div>    <div>        <input type="submit" value="登录" />@ViewBag.error    </div>}

web.config应该有如下配置才有效

附上一个比较完整的验证

using System;using System.Collections.Generic;using System.Data.Entity;using System.Linq;using System.Web;using System.ComponentModel.DataAnnotations;namespace RegisterValidation.Models{        public partial class User    {        [Key]        public int ID { get; set; }        [Display(Name="姓名")]        [Required(ErrorMessageResourceName="Required",ErrorMessageResourceType=typeof(Resource))]        public string Name { get; set; }        [Display(Name="生日")]        //[RegularExPRession(@"^/d{4}(/-|//|/.)/d{1,2}/1/d{1,2}$",ErrorMessageResourceName="Regular",ErrorMessageResourceType=typeof(Resource))]        [Required(ErrorMessageResourceName="Required",ErrorMessageResourceType=typeof(Resource))]        public DateTime? Birthday { get; set; }        [Display(Name="年龄")]        [Range(18,60,ErrorMessageResourceName="Range",ErrorMessageResourceType=typeof(Resource))]        public int Age { get; set; }        [Display(Name="用户名")]        [Required(ErrorMessageResourceName = "Required", ErrorMessageResourceType = typeof(Resource))]        public string Username { get; set; }        [Display(Name="密码")]        [Required(ErrorMessageResourceName="Required",ErrorMessageResourceType=typeof(Resource))]        public string Password { get; set; }        [Display(Name="邮箱")]        [Required(ErrorMessageResourceName="Required",ErrorMessageResourceType=typeof(Resource))]        [RegularExpression(@"^/w+((-/w+)|(/./w+))*/@[A-Za-z0-9]+((/.|-)[A-Za-z0-9]+)*/.[A-Za-z0-9]+$",ErrorMessageResourceName="Regular",ErrorMessageResourceType=typeof(Resource))]        public string Email { get; set; }    }    public class UserDBContext : DbContext    {        public DbSet<User> Users { get; set; }    }}

另一个部分user类，包含确认密码

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.ComponentModel.DataAnnotations;namespace RegisterValidation.Models{    public partial  class User    {        [Display(Name="确认密码")]        [Required(ErrorMessageResourceName = "Required", ErrorMessageResourceType = typeof(Resource))]        [StringLength(10,MinimumLength=5,ErrorMessageResourceName="StringLength",ErrorMessageResourceType=typeof(Resource))]        [Compare("Password",ErrorMessageResourceName="Compare",ErrorMessageResourceType=typeof(Resource))]        public string PasswordConfirm { get; set; }    }}