ExtJs学习笔记(5)_Ajax示例

ExtJs对于Ajax的使用非常简单,看下面的代码:

 

1.Html页:

 

<!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 >
     
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>    
    
<link rel="stylesheet" type="text/css" href="js/ext2.2/resources/css/ext-all.css" /> 
     
<script type="text/javascript" src="js/ext2.2/adapter/ext/ext-base.js"></script>    
    
<script type="text/javascript" src="js/ext2.2/ext-all.js"></script>
    
<title></title>
</head>
<body>
<script type="text/javascript">
    Ext.onReady(
function() {

        
var fnAjaxDemo = function() {
            
var mydata;
            Ext.Ajax.request({
                url: 
"GetData.ashx?name=" + encodeURIComponent(Ext.get("name").dom.value), //服务器端地址
                success: function(request) {
                    mydata 
= request.responseText; //服务器端文本数据                    
                    Ext.MessageBox.alert("返回值",mydata);
                },
                failure: 
function() {
                    alert(
"failure!");
                }
            });
        }

        Ext.get(
"btnTest").on("click", fnAjaxDemo);


    })
</script>

   
        
<input id="name" value="Jimmy" name="name" />
        
<button id="btnTest">获取服务端信息</button>
    
</body>
</html>


2.服务端GetData.ashx
using System.Web;
using System.Web.Services;


namespace Ajax_WCF
{
    
/// <summary>
    
/// $codebehindclassname$ 的摘要说明
    
/// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo 
= WsiProfiles.BasicProfile1_1)]
    
public class GetData : IHttpHandler
    {

        
public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType 
= "text/plain";
            
if (context.Request["name"!= null && context.Request["name"].ToString()!="")
            {
                context.Response.Write(
"Hello World," + context.Request["name"].ToString() + "!");
            }
            
else 
            {
                context.Response.Write(
"Hello World");
            }
        }

        
public bool IsReusable
        {
            
get
            {
                
return false;
            }
        }
    }
}


运行效果:


转载请注明来自"菩提树下的杨过"http://www.cnblogs.com/yjmyzz/archive/2008/08/30/1279918.html

posted @ 2008-08-30 09:31  菩提树下的杨过  阅读(2275)  评论(0编辑  收藏  举报