asp.net 定时间点执行任务的简易解决办法

<%@ Application Language="C#" %> 
<%@ Import Namespace="System.Threading" %> 

<script runat="server"> 

//这里使用静态保持对这处Timer实例的引用，以免GC 
private static System.Threading.Timer timer = null; 

protected void Application_Start(object sender, EventArgs e) { 
//计算现在到目标时间要过的时间段。 
DateTime LuckTime = DateTime.Now.Date.Add(new TimeSpan(7, 0, 0)); 
TimeSpan span = LuckTime - DateTime.Now; 
if (span < TimeSpan.Zero) { 
span = LuckTime.AddDays(1d) - DateTime.Now; 
} 
//按需传递的状态或者对象。 
object state = new object(); 
//定义计时器 
timer = new System.Threading.Timer( 
new TimerCallback(CertainTask), state, 
span, TimeSpan.FromTicks(TimeSpan.TicksPerDay)); 
} 

protected void Application_End(object sender, EventArgs e) { 
//结束时记得释放 
if (timer != null) { timer.Dispose(); } 
} 

//这里是指定时间执行的代码，必须是静态的。 
private static void CertainTask(object state) { 
//这里写你的任务逻辑 
} 

</script>