<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<div>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Button ID="BtnCommon" runat="server" Text="Common" onclick="Btn_Click" />
<br />
<asp:Button ID="btnPrecedence" runat="server" onclick="Btn_Click"
Text="Precedence" />
<br />
<asp:Label ID="lblmsg" runat="server" ForeColor="#FF3300"></asp:Label>
<hr>
<div id="divAsyncmsg"></div>
</ContentTemplate>
</asp:UpdatePanel>
<mce:script language="javascript" type="text/javascript"><!--
function ShowMsg(showmsg) {
var divAsyncmsg = $get("divAsyncmsg");
divAsyncmsg.innerHTML = showmsg; //现实信息
window.setTimeout(function() { divAsyncmsg.innerHTML=" "}, 3000);//三秒钟后清空
}//异步信息展示
var BtnPrecedenceID = "<%=this.btnPrecedence.ID %>";//获取优先级的按钮ID
var BtnLastpostBackID = null;//申明最后一次请求。
Sys.WebForms.PageRequestManager.getInstance().add_initializeRequest(
function(sender, e) {
var prm = Sys.WebForms.PageRequestManager.getInstance();//获取页面请求实例。
if (
