private void Add_Click(object sender, EventArgs e)
{
string numberEntered = calculator.Number_entered(Convert.ToDouble(display.Text));
resultValue += numberEntered;
display.Text = calculator.Addition_entered();
isNewNumberEntered = true;
temp_History += display.Text + "+";
}
private void number1_Click(object sender, EventArgs e)
{
textBox1.Text += number_1.Text;
calc.Number_entered(double.Parse(textBox1.Text));
}
