void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar >= 48 && e.KeyChar <= 57)
{
Operations.whatToDo(e.KeyChar.ToString());
}
}
void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar >= 48 && e.KeyChar <= 57)
{
Operations.whatToDo(e.KeyChar.ToString());
}
}