Model验证功能

时间:2023-03-08 19:49:02

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
Model验证功能
为了实现这种验证效果
Model验证功能
资源文件里可以这样写
Model验证功能
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

Model验证功能

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

Model验证功能

效果如下

Model验证功能

Model验证功能