private void DivButton_Click(object sender, EventArgs e) // / operation
{
if (finish == false)
{
EqualButton.PerformClick(); //used to perform multiple calculations
calc.Divide(Convert.ToDecimal(textBox1.Text));
finish = true;
}
else
{
calc.Divide(Convert.ToDecimal(textBox1.Text));
finish = true;
}
operation += textBox1.Text + " / ";
}
private void OperatorButton_Click(object sender, EventArgs e)
{
Button op = (Button)sender;
if (resVal != 0)
{
EqualButton.PerformClick();
showprevoperation = true;
operand = op.Text;
prevOperation.Text = resVal + " " + operand;
}
else
{
operand = op.Text;
resVal = Double.Parse(TotalDisplay.Text);
showprevoperation = true;
prevOperation.Text = resVal + " " + operand;
}
first_num = prevOperation.Text;
}