前面一篇文章我们介绍了HTML5中custom data-*特性，在Asp.net MVC Web App中原来我们对表单有验证，需要写这个js与Jquery Validation 插件配合, 回顾一下，看下面的代码:
<!DOCTYPE html> <html> <head> <title>LoginWithModel</title> <script src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.5.1.min.js" type="text/javascript"></script> <script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.7/jquery.validate.pack.js" type="text/javascript"></script> </head> <body> <form action="/Security/LoginWithModel" method="post"> <table> <tr> <td> <label for="UserName">User name</label> </td> <td> <input id="UserName" name="UserName" type="text" value="" /> </td> </tr> <tr> <td> <label for="Email">Email address</label> </td> <td> <input id="Email" name="Email" type="text" value="" /> </td> </tr> <tr> <td> <label for="Password">Password</label> </td> <td> <input id="Password" name="Password" type="password" /> </td> </tr> <tr> <td> <label for="ConfirmPassword">Confirm password</label> </td> <td> <input id="ConfirmPassword" name="ConfirmPassword" type="password" /> </td> </tr> </table> <input type="submit" value="Submit" /> </form> <script src="../../Scripts/MyformValidatation.js" type="text/javascript"></script> </body> </html>
JS 通常像这样:
$(document).ready(function () { $.validator.addMethod('Email', function (value) { return /^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$/.test(value); }, 'Please enter correct email.'); $("form").validate({ rules: { UserName: { required: true }, Email: { required: true, Email: true }, Password: { required: true, range: [6, 12] }, ConfirmPassword: { required: true, equalTo: "#Password" } } , messages: { UserName: { required: "Please enter UserName" }, Email: { required: "Please enter Email", Email: "Please enter corret email" }, Password: { required: "Please enter Password", range: "must be at least 6 characters long." }, ConfirmPassword: { required: "Please enter confirm password." } } , wrapper: "p", errorPlacement: function (error, element) { if (error != null) { error.insertAfter(element); } } }) });
接下来我们在Asp.net MVC 3 web 中，启用Unobtrusive JavaScript来帮做验证，我们只需在Web.config设置
<add key="ClientValidationEnabled" value="true"/> <add key="UnobtrusiveJavaScriptEnabled" value="true"/>
View, 先引用jquery.validate.unobtrusive.min.js,接着是这样的：
@model Mvc3App.Models.RegisterModel @{ Layout = null; } <!DOCTYPE html> <html> <head> <title>LoginWithModel</title> <script src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.5.1.min.js" type="text/javascript"></script> <script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.7/jquery.validate.pack.js" type="text/javascript"></script> <script src="http://ajax.aspnetcdn.com/ajax/mvc/3.0/jquery.validate.unobtrusive.min.js" type="text/javascript"></script> </head> <body> @Html.ValidationSummary("Errors have occurred:") @using (Html.BeginForm()) { <table> <tr> <td> @Html.LabelFor(m => m.UserName) </td> <td> @Html.TextBoxFor(i => i.UserName) @Html.ValidationMessageFor(i => i.UserName) </td> </tr> <tr> <td> @Html.LabelFor(m => m.Email) </td> <td> @Html.TextBoxFor(i => i.Email) @Html.ValidationMessageFor(i => i.Email) </td> </tr> <tr> <td> @Html.LabelFor(m => m.Password) </td> <td> @Html.PasswordFor(i => i.Password) @Html.ValidationMessageFor(i => i.Password) </td> </tr> <tr> <td> @Html.LabelFor(m => m.ConfirmPassword) </td> <td> @Html.PasswordFor(i => i.ConfirmPassword) @Html.ValidationMessageFor(i => i.ConfirmPassword) </td> </tr> </table> <input type="submit" value="Submit" /> } </body> </html>
Model类, 注意上面使用是System.ComponentModel.DataAnnotations特性。
public class RegisterModel { [Required] [Display(Name = "User name")] [RegularExpression("^[A-Za-z0-9]+$",ErrorMessage="Please correct format user name.")] public string UserName { get; set; } [Required] [DataType(DataType.EmailAddress)] [Display(Name = "Email address")] [RegularExpression(@"^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$", ErrorMessage = "Please correct format Email.")] public string Email { get; set; } [Required] [StringLength(12, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)] [DataType(DataType.Password)] [Display(Name = "Password")] public string Password { get; set; } [DataType(DataType.Password)] [Display(Name = "Confirm password")] [Compare("Password", ErrorMessage = "The password and confirmation password do not match.")] public string ConfirmPassword { get; set; } }
这时最后render出来html，你有看到那些验证规则都出来了:
<!DOCTYPE html> <html> <head> <title>LoginWithModel</title> <script src="http://ajax.aspnetcdn.com/ajax/jquery/jquery-1.5.1.min.js" type="text/javascript"></script> <script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.7/jquery.validate.pack.js" type="text/javascript"></script> <script src="http://ajax.aspnetcdn.com/ajax/mvc/3.0/jquery.validate.unobtrusive.min.js" type="text/javascript"></script> </head> <body> <form action="/Security/LoginWithModel" method="post"> <table> <tr> <td> <label for="UserName">User name</label> </td> <td> <input data-val="true" data-val-regex="Please correct format user name." data-val-regex-pattern="^[A-Za-z0-9]+$" data-val-required="The User name field is required." id="UserName" name="UserName" type="text" value="" /> <span class="field-validation-valid" data-valmsg-for="UserName" data-valmsg-replace="true"></span> </td> </tr> <tr> <td> <label for="Email">Email address</label> </td> <td> <input data-val="true" data-val-regex="Please correct format Email." data-val-regex-pattern="^\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$" data-val-required="The Email address field is required." id="Email" name="Email" type="text" value="" /> <span class="field-validation-valid" data-valmsg-for="Email" data-valmsg-replace="true"></span> </td> </tr> <tr> <td> <label for="Password">Password</label> </td> <td> <input data-val="true" data-val-length="The Password must be at least 6 characters long." data-val-length-max="12" data-val-length-min="6" data-val-required="The Password field is required." id="Password" name="Password" type="password" /> <span class="field-validation-valid" data-valmsg-for="Password" data-valmsg-replace="true"></span> </td> </tr> <tr> <td> <label for="ConfirmPassword">Confirm password</label> </td> <td> <input data-val="true" data-val-equalto="The password and confirmation password do not match." data-val-equalto-other="*.Password" id="ConfirmPassword" name="ConfirmPassword" type="password" /> <span class="field-validation-valid" data-valmsg-for="ConfirmPassword" data-valmsg-replace="true"></span> </td> </tr> </table> <input type="submit" value="Submit" /> </form> </body> </html>有注意到上面的html中，有加入相应data-*特性。这就是ASP.NET MVC 3 特性之一，注意这里必须使用BeginForm才能生成它们。最后我们能实现相同的验证效果，而我们不需要单独写JS了。别需要注意是，如果引入jquery.validate.unobtrusive相关js, 再其它地方使用 $("form").validate() 时，则不会生效。原因是jquery.validate.unobtrusive提前注册validate方法，它会与你自已定义冲突.
如果你想看看有哪个内在验证规则，可以运行下面的html:
<!DOCTYPE html> <html> <head> <title>jQuery Validate Unobtrusive demo</title> <script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.6.2.js" type="text/javascript"></script> <script src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.8.1/jquery.validate.js" type="text/javascript"></script> <script src="http://ajax.aspnetcdn.com/ajax/mvc/3.0/jquery.validate.unobtrusive.js" type="text/javascript"></script> <style type="text/css"> body, input { font-size: 9pt; } .input-validation-error { border: 1px solid #ff0000; } .input-validation-valid { border: 1px solid #00ff00; } .field-validation-error { color: #ff0000; } .field-validation-valid { display: none; } .validation-summary-errors { font-weight: bold; color: #ff0000; } .validation-summary-valid { display: none; } </style> </head> <body> <form id="form1" method="get"> <div data-valmsg-summary="true"> <ul> </ul> </div> <div> <input type="text" id="tReq" name="tReq" data-val="true" data-val-required="requried" /> <span data-valmsg-for="tReq"></span> </div> <div> <input type="text" id="tAccept" name="tAccept" value="a.doc" data-val="true" data-val-accept="name must be .jpg、.gif or .png" data-val-accept-exts="jpg|gif|png" /> <span data-valmsg-for="tAccept"></span> </div> <div> <input type="text" id="tRegex" name="tRegex" value="123-ABC@" data-val="true" data-val-regex="Format as 999-999" data-val-regex-pattern="[0-9A-Z]{3}-[0-9A-Z]{3}" /> <span data-valmsg-for="tRegex"></span> </div> <div> <input type="text" id="tDigit" name="tDigit" value="-1234" data-val="true" data-val-digits="should be digital" /> <span data-valmsg-for="tDigit"></span> </div> <div> <input type="text" id="tNum" name="tNum" value="-1,234.56A" data-val="true" data-val-number="should be number" /> <span data-valmsg-for="tNum"></span> </div> <div> <input type="text" id="tDate" name="tDate" value="X/01/X2000" data-val="true" data-val-date="should be digital Date" /> <span data-valmsg-for="tDate"></span> </div> <div> <input type="text" id="tEmail" name="tEmail" value="jeffrey @mail.com" data-val="true" data-val-email="should be Email" /> <span data-valmsg-for="tEmail"></span> </div> <div> <input type="text" id="tUrl" name="tUrl" value="http:// blog.darkthread.net" data-val="true" data-val-url="should be url" /> <span data-valmsg-for="tUrl"></span> </div> <div> <input type="text" id="tLen" name="tLen" value="TTT" data-val="true" data-val-length="Length from 4 to 8" data-val-length-min="4" data-val-length-max="8" /> <span data-valmsg-for="tLen"></span> </div> <div> <input type="text" id="tRange" name="tRange" value="5" data-val="true" data-val-range="range from 10 to100" data-val-range-min="10" data-val-range-max="100" /> <span data-valmsg-for="tRange"></span> </div> <div> <input type="text" id="tEq" name="tEq" value="99" data-val="true" data-val-equalto="same as above value" data-val-equalto-other="tRange" /> <span data-valmsg-for="tEq"></span> </div> <div> <input type="submit" id="send" value="Send" /> </form> </body> </html> Asp.net MVC 3 中 Unobtrusive JavaScript， 简化我们Web开发，提高了开发效率。
希望对您Web开发有帮助。
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Asp.net MVC中表单验证
作者：Petter Liu
出处：http://www.cnblogs.com/wintersun/
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该文章也同时发布在我的独立博客中-Petter Liu Blog。
