Timer控件放在Updatepanl里面和外面是有区别的,比如说设置它的Interval属性为10000,那么放在里面的时候,回传作业如果花2s的话,那么要等到回传完的时候才开始计时10s,也就是12s后才开始又回传作业。而放在外面的话则不同,当回传开始就开始计时10s,也就是回传完毕的8s后就又开始回传作业,这个才是真正的10一次作业。

<%@ 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" UpdateMode="Conditional">
                <ContentTemplate>
                    <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
                    <asp:Timer ID="Timer2" runat="server" Interval="10000" ontick="Timer2_Tick">
                    </asp:Timer>
                </ContentTemplate>
                <Triggers>
                    <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
                    <asp:AsyncPostBackTrigger ControlID="Timer2" EventName="Tick" />
                </Triggers>
            </asp:UpdatePanel>
            <asp:Timer ID="Timer1" runat="server" Interval="10000" ontick="Timer1_Tick">
            </asp:Timer>
        </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
{
    protected void Page_Load(object sender, EventArgs e)
    {
        Label1.Text = System.DateTime.Now.ToString();
     
    }

    protected void Timer2_Tick(object sender, EventArgs e)
    {
        Label1.Text = System.DateTime.Now.ToString();
    }
    protected void Timer1_Tick(object sender, EventArgs e)
    {
        Label1.Text = System.DateTime.Now.ToString();
    }
}

posted on 2009-09-03 18:11  sinbad_li  阅读(2810)  评论(0编辑  收藏  举报