WPF:使用frame做导航

index页面：

前台：

       
       
       
          //定义一个Frame
   

后台：

private void button1_Click(object sender, RoutedEventArgs e)
        {

            this.frame1.Navigate(new Uri("Page1.xaml", UriKind.Relative));  //当点击按钮的时候，Frame中的内容会变成相应的页面
        }

        private void button2_Click(object sender, RoutedEventArgs e)
        {
              this.frame1.Navigate(new Uri("Page2.xaml", UriKind.Relative));
        }

        private void button3_Click(object sender, RoutedEventArgs e)
        {
                this.frame1.Navigate(new Uri("Page3.xaml", UriKind.Relative));
        }