private void btSubstract_Click(object sender, EventArgs e)
{
// create the new maths object
clsMaths objMaths = new clsMaths();
// set number1 and number2 value
objMaths.intNumber1 = Convert.ToInt16(txtNumber1.Text);
objMaths.intNumber2 = Convert.ToInt16(txtNumber2.Text);
// we have set the statergy to subtract
objMaths.setStatergy(new clsSubstractStatergy());
// call the calculate method
txtResults.Text = objMaths.Calculate().ToString();
}
private void btnAdd_Click(object sender, EventArgs e)
{
// create the new maths object
clsMaths objMaths = new clsMaths();
// set number1 value and number2 value
objMaths.intNumber1 = Convert.ToInt16(txtNumber1.Text);
objMaths.intNumber2 = Convert.ToInt16(txtNumber2.Text);
// set the statergy currently we have set it to add
objMaths.setStatergy(new clsAddStatergy());
// call the calculate method
txtResults.Text = objMaths.Calculate().ToString();
}
