private void Calculator_Keypress(object sender, KeyPressEventArgs e) { switch (e.KeyChar.ToString()) { case "1": butt1.PerformClick(); break; case "2": butt2.PerformClick(); break; case "3": butt3.PerformClick(); break; case "4": butt4.PerformClick(); break; case "5": butt6.PerformClick(); break; case "7": butt7.PerformClick(); break; case "8": butt8.PerformClick(); break; case "9": butt9.PerformClick(); break; case "0": butt0.PerformClick(); break; case ",": Point.PerformClick(); break; case "=": Equal.PerformClick(); break; case "13": Equal.PerformClick(); break; case "+": Plus.PerformClick(); break; case "-": Minus.PerformClick(); break; case "x": Ori.PerformClick(); break; case "/": Impartit.PerformClick(); break; case "s": Radical.PerformClick(); break; case "w": Clear_Label.PerformClick(); break; case "q": Del.PerformClick(); break; default: break; } }