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用JQuery的插件validate来实现,更加简单,相比之前用xmlhttprequest来说,不用考虑浏览器兼容的问题,这也是使用是Jquery这个轻量级框架的特点之一。 <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TestValidation1.aspx.cs" Inherits="DemoMVCForm.Views.FormDemo.TestValidation1" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>Demo</title> <script src="http://www.cnblogs.com/Scripts/jquery-1.2.6.min.js" type="text/javascript"></script> <script src="http://www.cnblogs.com/Scripts/jquery.validate.js" type="text/javascript"></script> <script type="text/javascript"> $(document).ready(function() { $("#form-sign-up").validate({ rules: { login: { required: true, //here invoke related action remote: '<%=Url.Action("IsLoginAvailable", "FormDemo") %>' } }, messages: { login: { required: "请输入用户名", remote: jQuery.format("{0} 已经有人用了") } }, // set this class to error-labels to indicate valid fields success: function(label) { // set as text for IE label.html(" ").addClass("checked"); } }); }); </script> </head> <body> <form action="<%=Url.Action("Register", "FormDemo")%>" method="post" id="form-sign-up"> <h1>Demo表单</h1> <table id="inputArea"> <tr> <td>用户名 (试试输入 Petter):</td> <td><input type="text" name="login" id="login" /></td> </tr> <tr> <td colspan="2" align="center"><br /><input type="submit" /></td> </tr> </table> </form> </body> </html> Asp.net MVC支持Json,所有返回Json的结果,直接使用是JsonResult,看代码cs,很简单: /// <summary> /// FormDemoController /// </summary> /// <remark>Author : PetterLiu 2009-1-12 17:20 DEV-LIUJUNYUAN</remark> public class FormDemoController : Controller { public JsonResult IsLoginAvailable(string login) { //TODO: Do the validation JsonResult result = new JsonResult(); if (login == "Petter") result.Data = false; else result.Data = true; return result; } } |





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