1<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "<a href="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd</a>">
3<html xmlns="<a href="http://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml</a>">
4<head runat="server">
5 <title>无标题页</title>
6</head>
7<body>
8 <form id="form1" runat="server">
9 <div >
10 <asp:ScriptManager ID="ScriptManager1" runat="server">
11
12 </asp:ScriptManager>
13 <script language ="javascript">
14 function ComfirmRefresh()
15 {
16 if(confirm("你确认要刷新吗？"))
17 {
18 //第一个参数是你希望提交到服务器的控件的ID号，第二个参数是事件参数
19 __doPostBack("UpdatePanel1","Refresh");
20 }
21 }
22 </script>
23 <input id="Button1" type="button" value="button" onclick="ComfirmRefresh()" />
24 <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode ="Conditional">
25 <ContentTemplate>
26 <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
27 </ContentTemplate>
28 </asp:UpdatePanel>
29 </div>
30 </form>
31</body>
32</html>
1public partial class _Default : System.Web.UI.Page
2{
3 protected void Page_Load(object sender, EventArgs e)
4 { //当前ScriptManager1回发的值是AsyncPostback并且导致ScriptManager1的异步回发事件的控件为UpdatePanel1时。
5 if (ScriptManager1.IsInAsyncPostBack && ScriptManager1.AsyncPostBackSourceElementID == "UpdatePanel1")
6 //label1获取系统当前时间。
7 Label1.Text = DateTime.Now.ToString();