private void timer4_Tick(object sender, EventArgs e) // lift goes down { if (PictureBox.Top < 290) { PictureBox.Top = PictureBox.Top + 6; // move down by 6 ProgressBar.Top = ProgressBar.Top + 5; lift_status = 1; } else if ((PictureBox.Top > 0)) { FloorZeroDoors.Start(); // stop the timer for floor 0 lift_status = 0; } }