(Ajax)一个简单的微软CallBack例子（转）

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!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 id="Head1" runat="server">
    <title></title>
    
    <script language="Javascript" type="text/javascript">
        /* 本段函数用于实现与服务器的异步通讯 */
        function CallServer(arg){
            <%=ClientScript.GetCallbackEventReference(this, "arg", "JsServerBackSucess", null, "JsServerBackError", false) %>
        }
        // 服务器运行成功时，执行的js函数
        function JsServerBackSucess(argServerBack){
            if(argServerBack!=""){
                document.getElementById("lblTest").innerText=argServerBack;
            }
        }
        // 服务器运行出错时，执行的js函数
        function JsServerBackError(argServerBack){
           alert(argServerBack);
        }
        
        
        function getText(){
            CallServer(document.getElementById("txtTest").value);
        }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <input type="text" id="txtTest" runat="server"/>
        <input type="button" id="btnTest" runat="server" value="测试" onclick="getText();" />
        <label id="lblTest" runat="server"></label>
    </div>
    </form>
</body>
</html>

using System;
using System.Data;
using System.Configuration;
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;

public partial class _Default : System.Web.UI.Page , ICallbackEventHandler
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    ICallbackEventHandler 成员

    private string processChars(string str)
    {
        return str + ":-)";
    }

}
转自：http://topic.csdn.net/u/20090820/10/64d13efc-7d0c-4561-a3cf-01e51a673333.html?seed=1540256879&r=59207852#r_59207852
posted @ 2009-08-20 14:19  瞭望者  阅读(155)  评论(0)    收藏  举报