private void Clear_Click(object sender, RoutedEventArgs e)
{
First.Text = "0";
Second.Text = "0";
Wynik.Text = "0";
twoComponentOperation = null;
}
private void Divide_Click(object sender, RoutedEventArgs e)
{
twoComponentOperation = new Division(Double.Parse(Wynik.Text));
Flush();
}
private void Substract_Click(object sender, RoutedEventArgs e)
{
twoComponentOperation = new Substraction(Double.Parse(Wynik.Text));
Flush();
}
