private void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == (char)Keys.Escape)
{
result.Text = "0";
value = 0;
lblEquation.Text = "";
}
switch (e.KeyChar.ToString())
{
case "0":
zero.PerformClick();
break;
case "1":
one.PerformClick();
break;
case "2":
two.PerformClick();
break;
case "3":
three.PerformClick();
break;
case "4":
four.PerformClick();
break;
case "5":
five.PerformClick();
break;
case "6":
six.PerformClick();
break;
case "7":
seven.PerformClick();
break;
case "8":
eight.PerformClick();
break;
case "9":
nine.PerformClick();
break;
case "+":
add.PerformClick();
break;
case "-":
minus.PerformClick();
break;
case "×":
multiply.PerformClick();
break;
case "*":
multiply.PerformClick();
break;
case "/":
divide.PerformClick();
break;
case "=":
btnEqual.PerformClick();
break;
case "√":
SquareRoot.PerformClick();
break;
case "←":
backspace.PerformClick();
break;
case "¹/×":
reciprocal.PerformClick();
break;
case ".":
dec.PerformClick();
break;
case "ײ":
Squared.PerformClick();
break;
default:
break;
}
if (e.KeyChar == (char)Keys.Back)
{
backspace.PerformClick();
}
if (e.KeyChar == (char)Keys.Enter)
{
btnEqual.PerformClick();
}
}