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C# code
//ASP.NET中调用这个类。
//建议在Global里Application_Start中调用这个类,代码如下:
public class Global : System.Web.HttpApplication
{
protected void Application_Start(object sender, EventArgs e)
{
ScheduledTask.Instance().Start();
}
protected void Application_End(object sender, EventArgs e)
{
ScheduledTask.Instance().Stop();
}
}
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C# code
Timer实现计划任务的类:
public class ScheduledTask
{
private static readonly ScheduledTask _ScheduledTask = null;
private Timer UpdateTimer = null;
//间隔时间,这里设置为15分钟
private int Interval = 15 * 60000;
private int _IsRunning;
static ScheduledTask()
{
_ScheduledTask = new ScheduledTask();
}
public static ScheduledTask Instance()
{
return _ScheduledTask;
}
public void Start()
{
if(UpdateTimer == null)
{
UpdateTimer = new Timer(new TimerCallback(UpdateTimerCallback), null, Interval, Interval);
}
}
private void UpdateTimerCallback(object sender)
{
if(Interlocked.Exchange(ref _IsRunning, 1) == 0)
{
try
{
//此处写你自己想执行的任务
}
catch(Exception ex)
{
}
finally
{
Interlocked.Exchange(ref _IsRunning, 0);
}
}
}
public void Stop()
{
if(UpdateTimer != null)
{
UpdateTimer.Dispose();
UpdateTimer = null;
}
}
}
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exec a job in sql