MVC 数据验证收集代码

2022-10-05 15:21:58

控制器 Home

 using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Web;

 using System.Web.Mvc;

 namespace MvcApplication3.Controllers

 {

     public class HomeController : Controller

     {

         public ActionResult Index()

         {

             ViewBag.Message = "修改此模板以快速启动你的 ASP.NET MVC 应用程序。";

             return View();

         }

         /// <summary>

         /// 检查用户名是否有重复

         /// </summary>

         /// <param name="userName">用户在页面(视图)表单中输入的UserName</param>

         /// <returns>Json</returns>

         public ActionResult CheckUserName(string userName)

         {

             bool result = true;

             if (userName == "admin")

                 result = false;//已存在

             return Json(result, JsonRequestBehavior.AllowGet);

         }

     }

 }

Model(UserInfo)

 using System;

 using System.Collections.Generic;

 using System.Linq;

 using System.Text;

 using System.Threading.Tasks;

 using System.Web;

 using System.Web.Mvc;

 using System.ComponentModel;

 using System.ComponentModel.DataAnnotations;

 namespace Model

 {

     /// <summary>

     /// 　这些例子就是验证的，注意此处没有客户端验证，完全是服务器端验证的，如果出错，视图会渲染再次显示，非常好用啊，很方便啊，要在以前你要写多少行代码来搞定这些繁琐无味的验证呢？微软太体恤程序员了，顶一个。

     /// 　在下面的例子当中，当数据发送到服务器验证不通过之后，则所有用户填写的内容在重新打开的页面后都清空了， 如果想不清空，即用户第一次填的内容还存在的话，可以return View(接受到的对象);

     /// </summary>

     public class UserInfo

     {

         public int Id { get; set; } //ID

         /// <summary>

         ///DisplayName:指定当前字段显示的名称

         ///StringLength：指定允许的长度，括号里的第一个参数是最大长度,第二个参数是最小长度。最后一个参数是指：单字段值的长度不符合第一第二参数规定时候，提示错误的内容

         ///Required：表示当前字段是必填选项，当提交的表单缺少该值就引发验证错误。括号里的AllowEmptyStrings是： 获取或设置一个值，该值指示是否允许空字符串。单值为false的时候表示当前字段的值不能为空

         ///Remote:允许利用服务器端的回调函数执行客户端的验证逻辑。说白了就是支持AJAX验证。括号里的CheckUserName是Action方法。Home是控制器 ,它会调用Home控制中的CheckUserName方法来查询你所输入的用户名是否已经存在，如果存在，则提示"用户名已经存在"

         /// </summary>

         [DisplayName("用户名")]

         [Required(AllowEmptyStrings = false, ErrorMessage = "用户名不能为空")]

         [StringLength(, MinimumLength = , ErrorMessage = "用户名长度必须在{2}和{1}位之间")]

         [Remote("CheckUserName", "Home", ErrorMessage = "用户名已经存在")]

         public string UserName { get; set; } //用户名  

         [DisplayName("用户密码")]

         [DataType(DataType.Password)] //将密码已*号的形式来显示

         [Required(AllowEmptyStrings = false, ErrorMessage = "密码不能为空")]

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

         public string UserPassword { get; set; } //用户密码  

         [DataType(DataType.Password)]

         [System.ComponentModel.DataAnnotations.Compare("UserPassword", ErrorMessage = "密码不一致")]

         [DisplayName("请再次确认密码")]

         public string TUserPassword { get; set; }  //再次输出密码  

         /// <summary>

         /// RegularExpression:表示当前字段的值要符合一个正则表达式。如果不能匹配，则报一个验证错误。ErrorMessage的内容就是验证错误的具体信息。

         /// </summary>

         [Display(Name = "邮箱")] //也可以写成  [DisplayName("邮箱")]

         [Required(AllowEmptyStrings = false, ErrorMessage = "邮箱不能为空")]

         //[DataType(DataType.EmailAddress, ErrorMessage = "xxxxxxxx")] //其实也可以用以下的正则表达式来验证邮箱

         [RegularExpression(@"[A-Za-z0-9._%+-]+@[A-Za-z0-9]+\.[A-Za-z]{2,4}", ErrorMessage = "{0}的格式不正确")]

         public string Email { get; set; } //邮箱  

         [DisplayName("请再次确认邮箱")]

         [System.ComponentModel.DataAnnotations.Compare("Email", ErrorMessage = "两次输入的邮箱不一致")]

         //[DataType(DataType.EmailAddress, ErrorMessage = "请输入有效的邮箱地址")]

         public string TEmail { get; set; } //再次输入邮箱  

         [DisplayName("身份证")]

         [RegularExpression(@"\d{17}[\d|x]|\d{15}", ErrorMessage = "身份证号码格式错误")]

         public string IdentityNo { get; set; } //身份证号  

         /// <summary>

         /// Range:用来指定数值类型值的最小值和最大值。括号里的第一个数的“最小值”第二个参数是“最大值”

         /// </summary>

         [DisplayName("年龄")]

         [Required(AllowEmptyStrings = false, ErrorMessage = "年龄不能为空")]

         [Range(, , ErrorMessage = "您输入的年龄不符合规范，年龄应该在{1}-{2}之间")]

         public int Age { get; set; } //年龄  

         /// <summary>

         /// DisplayFormat:用来处理属性的各种格式化选项。当属性包含空值时，可以提供可选的显示文本，也可以为包含标记的属性关闭HTML编码，还可以为运行时指定一个应用于属性值的格式化字符串。

         /// </summary>

         [DisplayName("金额")]

         [DataType(DataType.Currency)] //Currency:表示货币值

         [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:c}")]

         [Required(ErrorMessage = "金额不能为空")]

         [Range(typeof(decimal), "20.0", "30.0", ErrorMessage = "金额在{1}和{2}之间")]

         public decimal Money { get; set; } //金额  

         [Display(Name = "手机号码")]

         [DataType(DataType.PhoneNumber)]

         [RegularExpression(@"((\d{11})|^((\d{7,8})|(\d{4}|\d{3})-(\d{7,8})|(\d{4}|\d{3})-(\d{7,8})-(\d{4}|\d{3}|\d{2}|\d{1})|(\d{7,8})-(\d{4}|\d{3}|\d{2}|\d{1}))$)", ErrorMessage = "格式不正确")]

         public int Phome { get; set; }

         [Display(Name = "生日")]

         //[DisplayFormat(ApplyFormatInEditMode=true,DataFormatString="yyyy/MM/dd")]

         [Required] //当前字段的值不能为空

         public DateTime Birthday { get; set; } //生日  

         [Display(Name = "备注")]

         [DataType(DataType.MultilineText)] //当前字段是个多行文本

         public string Remarks { get; set; } //备注  

     }

 }

View (Index)

 @model Model.UserInfo

 @{

     ViewBag.Title = "主页";

 }

 <script src="~/Scripts/jquery-1.7.1.min.js"></script>

 <script src="~/Scripts/jquery.validate.min.js"></script>

 <script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

 @using (Html.BeginForm())

 {

     @Html.ValidationSummary(true)  

     <fieldset>

         <legend>UserInfo</legend>

         <div class="editor-label">

             @Html.LabelFor(model => model.UserName)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.UserName)

             @Html.ValidationMessageFor(model => model.UserName)

         </div>

         <div class="editor-label">

             @Html.LabelFor(model => model.UserPassword)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.UserPassword)

             @Html.ValidationMessageFor(model => model.UserPassword)

         </div>

         <div class="editor-label">

             @Html.LabelFor(model => model.TUserPassword)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.TUserPassword)

             @Html.ValidationMessageFor(model => model.TUserPassword)

         </div>

         <div class="editor-label">

             @Html.LabelFor(model => model.Email)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.Email)

             @Html.ValidationMessageFor(model => model.Email)

         </div>

         <div class="editor-label">

             @Html.LabelFor(model => model.TEmail)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.TEmail)

             @Html.ValidationMessageFor(model => model.TEmail)

         </div>

         <div class="editor-label">

             @Html.LabelFor(model => model.IdentityNo)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.IdentityNo)

             @Html.ValidationMessageFor(model => model.IdentityNo)

         </div>

         <div class="editor-label">

             @Html.LabelFor(model => model.Age)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.Age)

             @Html.ValidationMessageFor(model => model.Age)

         </div>

         <div class="editor-label">

             @Html.LabelFor(model => model.Money)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.Money)

             @Html.ValidationMessageFor(model => model.Money)

         </div>

         <div class="editor-label">

             @Html.LabelFor(model => model.Phome)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.Phome)

             @Html.ValidationMessageFor(model => model.Phome)

         </div>

         <div class="editor-label">

             @Html.LabelFor(model => model.Birthday)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.Birthday)

             @Html.ValidationMessageFor(model => model.Birthday)

         </div>

         <div class="editor-label">

             @Html.LabelFor(model => model.Remarks)

         </div>

         <div class="editor-field">

             @Html.EditorFor(model => model.Remarks)

             @Html.ValidationMessageFor(model => model.Remarks)

         </div>

         <p>

             <input type="submit" value="Create" />

         </p>

     </fieldset>

 }

 <div>

     @Html.ActionLink("Back to List", "Index")

 </div>

 最终效果

MVC 数据验证收集代码

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