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【Asp.Net】时间倒计时

作者:Dezai.CN / 发布于2013/3/7/ 1362

时间倒计时


	后台代码：
	using System;
	using System.Data;
	using System.Configuration;
	using System.Collections;
	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;

	namespace AJAXEnabledWebApplication1
	{
	 public partial class Timer : System.Web.UI.Page
	 {
	
	 private DateTime dtExam = DateTime.Parse("2009-07-22 20:42:00"); //定义时间到期时间

	 protected void Page_Load(object sender, EventArgs e)
	 {
	 }

	 protected void timerCD_Tick(object sender, EventArgs e)
	 {
	 if (this.dtExam < DateTime.Now) //如果设置的时间已过
	 {
	 this.timerCD.Enabled = false; //将Timmer置为false
	 labTimes.Text = "时间到！";
	 }
	 else
	 {
	 RefreshTime(); //刷新时间
	}
	 }

	 private void RefreshTime() //刷新时间的方法
	 {
	 TimeSpan ts = this.dtExam - DateTime.Now; //时间差
	 this.labDays.Text = ts.Days.ToString().PadLeft(2, '0') + "天";
	 this.labTimes.Text = ts.Hours.ToString().PadLeft(2, '0') + ":" + ts.Minutes.ToString().PadLeft(2, '0') + ":" + ts.Seconds.ToString().PadLeft(2, '0');
	 }

	 }

	}

	
	前台代码：

	<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Timer.aspx.cs" Inherits="AJAXEnabledWebApplication1.Timer" %>

	<!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>倒计时</title>
	</head>
	<body>
	 <form id="form1" runat="server">
	 <div>
	 &nbsp;</div>
	 &nbsp;<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>&nbsp;
	 <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
	 时<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>分<asp:ScriptManager ID="ScriptManager1" runat="server">
	 </asp:ScriptManager>
	 <asp:UpdatePanel ID="UpdatePanel1" runat="server">
	 <ContentTemplate>
	 <asp:Timer ID="timerCD" runat="server" Interval="1000" OnTick="timerCD_Tick">
	 </asp:Timer>
	 <asp:Label ID="labDays" runat="server" Width="155px"></asp:Label><asp:Label ID="labTimes" runat="server" Width="155px"></asp:Label>
	 </ContentTemplate>
	 </asp:UpdatePanel>
	 </form>
	</body>
	</html>

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　倒计时　

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