Model验证功能

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(,,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(,MinimumLength=,ErrorMessageResourceName="StringLength",ErrorMessageResourceType=typeof(Resource))]

        [Compare("Password",ErrorMessageResourceName="Compare",ErrorMessageResourceType=typeof(Resource))]

        public string PasswordConfirm { get; set; }

    }

}

资源文件如下

效果如下

巴特西

Model验证功能

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