关于Ajax的简单例子
引用自：http://www.cnblogs.com/singlepine/archive/2006/01/06/253393.html
Ajax 是 “Asynchronous JavaScript + XML”的简称，也就是异步的JavaScript和XML处理。从原理上看，主要是Ajax可以通过调用HttpRequest实现与服务器的异步通讯，并最终在网页中实现丰富友好的用户界面
Ajax使用初步，配置步骤
1.把Ajax.dll copy到应用系统bin目录下，然后在工程引用中引用Ajax.dll，如果没有的话可以下载/Files/singlepine/Ajax.rar
2.配置web.config，添加如下信息
<system.web>
<httpHandlers>
<add verb="POST,GET" path="ajax/*.ashx" type="Ajax.PageHandlerFactory, Ajax" />
</httpHandlers>
3. aspx页面文件 WebForm1.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication7.WebForm1" %>
<!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>无标题页</title>
<meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1"/>
<meta name="CODE_LANGUAGE" content="C#"/>
<meta name="vs_defaultClientScript" content="JavaScript"/>
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"/>
<script language="javascript" type="text/javascript">
function testAjax()
{
var first=document.getElementById("txtfirst");
WebForm1.GetNIVNumber(first.value,callback_GetNIVNumber);
}
function callback_GetNIVNumber(res)
{
var obj=document.getElementById("txtsecond");
obj.value=res.value;
}
</script>
</head>
<body >
<form id="Form1" method="post" runat="server">
<input type="button" value="Button" onclick="testAjax();" id="Button1"/>
<br />
<asp:TextBox id="txtfirst" runat="server"></asp:TextBox><br />
<asp:TextBox id="txtsecond" runat="server"></asp:TextBox>
</form>
</body>
</html>
3. 类文件。
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
namespace WebApplication7
{
public partial class WebForm1 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Ajax.Utility.RegisterTypeForAjax(typeof(WebApplication7.WebForm1));
}
[Ajax.AjaxMethod(Ajax.HttpSessionStateRequirement.Read)]
public static string GetNIVNumber(string str)
{
return str;
}
}
}
4. 演示结果，点铵钮后将第二个框中显示第一个框中的值。
Ajax 是 “Asynchronous JavaScript + XML”的简称，也就是异步的JavaScript和XML处理。从原理上看，主要是Ajax可以通过调用HttpRequest实现与服务器的异步通讯，并最终在网页中实现丰富友好的用户界面
Ajax使用初步，配置步骤
1.把Ajax.dll copy到应用系统bin目录下，然后在工程引用中引用Ajax.dll，如果没有的话可以下载/Files/singlepine/Ajax.rar
2.配置web.config，添加如下信息
<system.web> <httpHandlers> <add verb="POST,GET" path="ajax/*.ashx" type="Ajax.PageHandlerFactory, Ajax" /> </httpHandlers><%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication7.WebForm1" %>
<!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>无标题页</title> <meta name="GENERATOR" content="Microsoft Visual Studio .NET 7.1"/> <meta name="CODE_LANGUAGE" content="C#"/> <meta name="vs_defaultClientScript" content="JavaScript"/> <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5"/> <script language="javascript" type="text/javascript"> function testAjax() {
var first=document.getElementById("txtfirst"); WebForm1.GetNIVNumber(first.value,callback_GetNIVNumber); } function callback_GetNIVNumber(res) { var obj=document.getElementById("txtsecond"); obj.value=res.value; } </script> </head> <body > <form id="Form1" method="post" runat="server"> <input type="button" value="Button" onclick="testAjax();" id="Button1"/> <br /> <asp:TextBox id="txtfirst" runat="server"></asp:TextBox><br /> <asp:TextBox id="txtsecond" runat="server"></asp:TextBox> </form> </body></html>3. 类文件。
using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;namespace WebApplication7{ public partial class WebForm1 : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { Ajax.Utility.RegisterTypeForAjax(typeof(WebApplication7.WebForm1)); } [Ajax.AjaxMethod(Ajax.HttpSessionStateRequirement.Read)] public static string GetNIVNumber(string str) { return str; } }}
