إقتباس : void Timer_Tick(object sender, System.Timers.ElapsedEventArgs e)
{
Application["onlines"] = "";
}

void Application_Start(object sender, EventArgs e)
{
// Code that runs on application startup
Application["onlines"] = "";
System.Timers.Timer Timer = new System.Timers.Timer();
Timer.Interval = 60000;
Timer.Elapsed += new System.Timers.ElapsedEventHandler(Timer_Tick);
Timer.Enabled= true;
Timer.Start();
}