private void timer1_Tick(object sender, EventArgs e) { dt2 = DateTime.Now.ToLongDateString(); sa2 = DateTime.Now.ToLongTimeString(); label4.Text = dt2; label5.Text = sa2; if (dt1 == dt2 && sa1 == sa2) { Saat nsaat = new Saat(); timer1.Stop(); this.Hide(); nsaat.ShowDialog(); this.Show(); } }