ClientScript.GetCallbackEventReference几个参数的使用实例

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm3.aspx.cs" Inherits="Cl_WebComTest.WebForm3" %>

<!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></title>
    <script type="text/javascript">
        function fun_callbk(msg,context) {
            <%=this.ClientScript.GetCallbackEventReference(this,"msg","showMsg","context")%>
        }

        function showMsg(rValue,context) {
            alert(rValue);
            alert(context.UnitText);
        }

    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <div style="cursor:hand;background-color:#ededed;" onclick="var context=new Object;context.UnitText = '个';fun_callbk('大家好',context)">click me</div>
    </div>
    </form>
</body>
</html>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Cl_WebComTest
{
    public partial class WebForm3 : System.Web.UI.Page, ICallbackEventHandler
    {
        string myStr = string.Empty;

        public void RaiseCallbackEvent(string arg)
        {

            myStr = arg + "hello";//还是简单的写，将客户端传来的值赋给咱新声明的变量

            //加一个hello,是为了验证数据的确是有服务端处理后返回的

        }

        public string GetCallbackResult()
        {
            return myStr;//将结果返回客户端
        }

        protected void Page_Load(object sender, EventArgs e)
        {

        }
    }
}