How to get old page

Hello sir / madam,
                           I am trying to develop sample silverlight application. My requirement is to navigate from one page to another page. Now i am writing code in button click handlers in both the pages like

 private void oldPage_Click(object sender, RoutedEventArgs e)
        {
            this.Content = new OldPage();
        }

 private void newPage_Click(object sender, RoutedEventArgs e)
        {
            this.Content = new NewPage();
        }
Is ther any other approach like master pages in Asp.Net master  pages

Please provide guide lines ...........

Thanks in advance............