private void Timer_Tick(object sender, EventArgs e) { TimeSpan TS = Time - stopwatch.Elapsed; TimeLabel.Text = String.Format("{0:00}:{1:00}:{2:00}", TS.Hours, TS.Minutes, TS.Seconds); if (TS.Hours == 0 && TS.Minutes == 0 && TS.Seconds == 0) { stopwatch.Stop(); Timer.Stop(); K = XmlTest.Questions.Count - 1; PushButton.PerformClick(); } }