1. 有直接用框架的:Ajaxpro和Ajax,这两种我用过了,觉得不错 2. 还有一种就是用微软专门为Ajax开发的控件包,叫作ASP.NET AJAX Control Toolkit,这个我没太研究,网上有相关资料,想知道的可以自己去查,里面有很多现成的控件可以实现AJAX。 以上三种是我收集到的一些AJAX的实现方法,我要讲的是第一种方法的应用,因为第一种能叫你明白AJAX的运行原理,比较适合初学者。 我主要讲Ajaxpro,这是个组件,必须去网上下载,其实就是一个Ajaxpro.dll文件,注意,网上有两种一种叫Ajax.dll一种叫 Ajaxpro.dll,这两种功能上是一样的,就是添加引用的语句有些不同,下面我会分别说的。其实用AJAX都要下相关组件的,开始我也不习惯下什么插件,可后来还是下了,不下不行呀。我下到的是Ajax.dll,所以讲时以Ajax.dll为准。 13份WPF经典开发教程 http://download.csdn.net/album/detail/1115 C#资料合辑二[C#桌面编程入门篇] http://download.csdn.net/album/detail/957 C#资料合辑一[C#入门篇] http://download.csdn.net/album/detail/669 [Csharp高级编程(第6版)](共8压缩卷) http://download.csdn.net/album/detail/667 10个[精品资源]Java学习资料合辑[一] http://download.csdn.net/album/detail/663 10个C#Socket编程代码示例 http://download.csdn.net/album/detail/631 6份GDI+程序设计资源整合[全零分] http://download.csdn.net/album/detail/625 更多免费资源 http://download.csdn.net/user/cleopard 应用篇,这以下的东西会借鉴网上其他人的文章,在这里声明一下 1.先把Ajax.dll添加引用到项目中,别告诉我不会,如果连这个也不会就太那个了,和添加其他DLL一样,在项目上右击,菜单上有个[添加引用],然后一步一步把那个.DLL文件添加进来,之后你会在项目的引用中看到那个Ajax.dll就是添加成功了 2.修改Web.config。在 <system.web> 元素中添加以下代码。这里的Ajax.dll和Ajaxpro.dll引用方法是不一样的,一定要注意 <configuration> <system.web> <httpHandlers> <!-- Ajax.dll的配置文件写法为,我下载到的是这个 --> <add verb="POST,GET" path="ajax/*.ashx" type="Ajax.PageHandlerFactory, Ajax" /> <!-- AjaxPro.dll的配置文件写法为,根据你下载到的DLL文件选择不同的配置语句--> <add verb="*" path="ajaxpro/*.ashx" type="AjaxPro.AjaxHandlerFactory, AjaxPro"/> </httpHandlers> </system.web> </configuration> 如果是IIS7,则需要在<system.webServer></system.webServer>里加上<add name="ajax" verb="POST,GET" path="ajax/*.ashx" type="Ajax.PageHandlerFactory, Ajax" /> 3对AjaxPro用到的页Page_Load事件中进行运行时注册。如: protected void Page_Load(object sender, EventArgs e) { Ajax.Utility.RegisterTypeForAjax(typeof(_Default));//是Ajax.dll的 AjaxPro.Utility.RegisterTypeForAjax(typeof(_Default));//Ajaxpro.dll的 } //这的_Default是指页面类的类名,就是这个页面的名字。如是放在命名空间,则需要写上完整的命名空间(如:namespaces._Default) 4. 创建服务器端方法 [Ajax.AjaxMethod]//这句一定要有,如果你是Ajaxpro.dll就写成[AjaxPro.AjaxMethod] public string getValue(int a,int b) { //该方法我们将实现从客户端传入两个数,在服务器端相加计算后返回到客户端。这里可以写在原来的页后台中也可以单独写一个类。 return Convert.ToString(a+b);//这里返回的就是前台得到的值,反正参数已经进CS文件了,想怎么操作就怎么操作,包括读库都可以。 5. 客户端调用。 <%@ Page language="c#" Codebehind="WebPage1.aspx.cs" AutoEventWireup="false" Inherits="Web.WebPage1" %> <script language="javascript"> function getValue() { //这里如果是AjaxPor.dll就加Web._Default.getValue,如果是Ajax.dll就不用加命名空间如下 _Default.getValue(1,2,getGroups_callback);//该处即调用服务器端的_Default.getValue方法。 //_Default就是写getValue的那个类,如果写在本页CS里就是WebPage1.getValue,1和2是参数。 //这在里边getGroups_callback指定的是个回调函数,以接受服务器端处理完后返回客户端结果。 } //这个方法用户接受并处理服务器端返回的结果。 function getGroups_callback(response) { var dt=response.value;//这个值就是最终传回来的值,想怎么用就怎么用,反正回前台了。 document.getElementById("Div_1").innerHTML=dt; } </script> <body> <div id="Div_1"> </div> <button </botton> </body> 13份WPF经典开发教程 http://download.csdn.net/album/detail/1115 C#资料合辑二[C#桌面编程入门篇] http://download.csdn.net/album/detail/957 C#资料合辑一[C#入门篇] http://download.csdn.net/album/detail/669 [Csharp高级编程(第6版)](共8压缩卷) http://download.csdn.net/album/detail/667 10个[精品资源]Java学习资料合辑[一] http://download.csdn.net/album/detail/663 10个C#Socket编程代码示例 http://download.csdn.net/album/detail/631 6份GDI+程序设计资源整合[全零分] http://download.csdn.net/album/detail/625 更多免费资源 http://download.csdn.net/user/cleopard
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