用js做自动刷新时间
把结束时间取出来放在隐藏控件里
<input id="txttime" runat="server" type="hidden" />
<span id="time"></span>
<script language="JavaScript">
var now= new Date()
function GetServerTime()
{
var utime=document.getElementById("txttime").value;
var urodz = new Date(utime);
now.setTime(now.getTime()+250);
days = (urodz - now) / 1000 / 60 / 60 / 24;
daysRound = Math.floor(days);
hours = (urodz - now) / 1000 / 60 / 60 - (24 * daysRound);
hoursRound = Math.floor(hours);
minutes = (urodz - now) / 1000 /60 - (24 * 60 * daysRound) - (60 * hoursRound);
minutesRound = Math.floor(minutes);
seconds = (urodz - now) / 1000 - (24 * 60 * 60 * daysRound) - (60 * 60 * hoursRound) - (60 * minutesRound);
secondsRound = Math.round(seconds);
var time=daysRound+"天" + hoursRound + "小时" + minutesRound + "分" + secondsRound+ "秒"; ;
document.getElementById("time").innerHTML =time;
}
setInterval("GetServerTime()",250);
</script>
另一种就是用ajax控件
先安装ajax extensions
在工具栏中会出现ajax extensions项，下面有五个控件分别是Timer,SeriptManager,SeriptManagerProxy,UpdateProgress,UpdatePanel
拖入SeriptManager,UpdatePanel,把Timer拖入UpdatePanel
双击Timer，生成OnTick事件
<%@ Register Assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
Namespace="System.Web.UI" TagPrefix="asp" %>
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Timer ID="Timer1" runat="server" OnTick="Timer1_Tick">
</asp:Timer>
<%=时间 %>
</ContentTemplate>
</asp:UpdatePanel>
//在页面事件中写上解析的时间
protected void Timer1_Tick(object sender, EventArgs e)
{
// DateDiff();
}
public void DateDiff()
{
string date = txttime.Value;
if (date != "")
{
DateTime DateTime2 = Convert.ToDateTime(date);
TimeSpan ts1 = new TimeSpan(DateTime.Now.Ticks);
TimeSpan ts2 = new TimeSpan(DateTime2.Ticks);
TimeSpan ts = ts1.Subtract(ts2).Duration();
Day = ts.Days.ToString() + "天";
Hour = ts.Hours.ToString() + "小时";
Minute = ts.Minutes.ToString() + "分钟";
Second = ts.Seconds.ToString() + "秒";
}
}
web.config的节点system.web中加
<httpHandlers>
<remove verb="*" path="*.asmx"/>
<add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
<add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
<add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" validate="false"/>
</httpHandlers>
<httpModules>
<add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</httpModules>
本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/luobailian/archive/2010/06/29/5701829.aspx