private void playAI(object sender, EventArgs e) { foreach (Control x in this.Controls) { if (x is Button && x.Text == "?" && x.Enabled) { x.Enabled = false; currentPlayer = Player.O; x.Text = currentPlayer.ToString(); x.BackColor = System.Drawing.Color.LightGoldenrodYellow; AITIMER.Stop(); Check(); break; } else { AITIMER.Stop(); } } }