//首先加入下列脚本
<script>...
//获取时间
function Timer(span)
...{
var tmp = new Date();
var milsecs=Date.parse(tmp.getMonth()+"-"+tmp.getDay()+"-"+tmp.getFullYear()+" "+document.getElementById(''lbl_Hour'').innerText+":"+document.getElementById(''lbl_Minute'').innerText+":"+document.getElementById(''lbl_Second'').innerText);
var timer = new Date(milsecs+span);
var seconds,minutes,hours;
if(timer.getSeconds()<10)
seconds = "0"+timer.getSeconds();
else
seconds = timer.getSeconds();
if(timer.getMinutes()<10)
minutes = "0"+timer.getMinutes();
else
minutes = timer.getMinutes();
if(timer.getHours()<10)
hours = "0"+timer.getHours();
else
hours = timer.getHours();
document.getElementById(''lbl_Second'').innerText = seconds;
document.getElementById(''lbl_Minute'').innerText = minutes;
document.getElementById(''lbl_Hour'').innerText = hours;
}
//得到服务器时间每隔updatespan分钟校验一次，每秒更新一次本地时钟
function GetServerTime(updatespan)
...{
var clientspan = 1*1000;
//更新本地时钟
setInterval("Timer("+clientspan+")",clientspan);
//同步服务器时钟 注意''SendErrorTaskModify.aspx''是你当前页的名称
setInterval("window.location.href=''SendErrorTaskModify.aspx''",updatespan);
}
//-->
</script>
//下面这个方法也可以移到aspx.cs后台文件中
<script language="C#" runat="server">...
string GetTime(object day)
...{
if(day.ToString()=="")
return "";
else
...{
return(DateTime.Parse(day.ToString()).ToShortTimeString());
}
}
</script>
//接着在body 中添加如下方法
<body onload="GetServerTime(15*60*1000)">
//在界面中添加如下时间的label
<tr>
<td colspan="4">
<asp:Label ID="lbl_Time" runat="server" Font-Size="X-Small" ForeColor="blue"></asp:Label>
<asp:Label ID="lbl_Hour" runat="server" Font-Size="X-Small" ForeColor="blue">Label</asp:Label>:
<asp:Label ID="lbl_Minute" runat="server" Font-Size="X-Small" ForeColor="blue">Label</asp:Label>:
<asp:Label ID="lbl_Second" runat="server" Font-Size="X-Small" ForeColor="blue">Label</asp:Label>
</td>
</tr>
//在aspx.cs后台代码中PageLoad(...)中添加 这个非常重要
lbl_Hour.Text = DateTime.Now.Hour.ToString();
lbl_Minute.Text = DateTime.Now.Minute.ToString();
lbl_Second.Text = DateTime.Now.Second.ToString();