<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>
<script runat="server">
void Button1_Click(object sender, EventArgs e)
{
this.Label1.Text = "更新时间：" + System.DateTime.Now.ToString(); System.Threading.Thread.Sleep(2000);
} void Button2_Click(object sender, EventArgs e) { this.Label1.Text = "更新时间：" + System.DateTime.Now.ToString();
}</script><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>UpdatePanel Trigger Sample</title></head><body> <form id="form1" runat="server"> <div> <asp:ScriptManager ID="ScriptManager1" runat="server"> </asp:ScriptManager> <asp:UpdateProgress ID="UpdateProgress1" runat="server"> <ProgressTemplate> <div style="left: 0px; 127px; position: relative; top: 0px; background-color: #ffcc33; float: right;"> 正在处理
</div> </ProgressTemplate> </asp:UpdateProgress> </div> <asp:UpdatePanel ID="UpdatePanel1" runat="server"> <ContentTemplate> <div> <asp:Button ID="Button1" runat="server" Text="异步回送" OnClick="Button1_Click" /> <br /> <br /> <asp:Label ID="Label1" runat="server" Text="当前时间" Font-Bold="True" Font-Size="Large"></asp:Label></div> </ContentTemplate> <Triggers> <asp:AsyncPostBackTrigger ControlID="Button1" /> <asp:PostBackTrigger ControlID="Button2" /> </Triggers> </asp:UpdatePanel> </form></body></html>