Xaml 如何以编程方式设置PageOrientation.scape？WindowsPhone8c#

我想把全屏图标栏放在全屏上播放视频

对于“我拿什么”应用程序栏按钮：

private void BuildLocalizedApplicationBar()
        {
            // Set the page's ApplicationBar to a new instance of ApplicationBar.
            ApplicationBar = new ApplicationBar();

            // Create a new button and set the text value to the localized string from AppResources.
            ApplicationBarIconButton appBarButton = new ApplicationBarIconButton(new Uri("/images/AppbarIcon/wallpaper.png", UriKind.Relative));
            appBarButton.Text = "FullScreen";
            ApplicationBar.Buttons.Add(appBarButton);
            appBarButton.Click += appBarButton_Click;
        }

然后我编写click事件以使其工作：当我们单击时，我希望页面为横向：，我可以使用emulator右侧按钮来执行，但无法通过代码执行：

  void appBarButton_Click(object sender, EventArgs e)
            {
                //SupportedOrientations = SupportedPageOrientation.Landscape;
                this.Orientation = PageOrientation.Landscape;
            }

当页面方向改变时，我想触发这个事件：当我从模拟器右侧按钮执行操作时，它将被触发

private void PhoneApplicationPage_OrientationChanged(object sender, OrientationChangedEventArgs e)
            {
                if (e.Orientation == PageOrientation.Landscape ||
                    e.Orientation == PageOrientation.LandscapeLeft ||
                    e.Orientation == PageOrientation.LandscapeRight)
                {
                    TitlePanel.Visibility = System.Windows.Visibility.Collapsed;

                    player.Height = Double.NaN;
                    player.Width = Double.NaN;

                    player.VerticalAlignment = System.Windows.VerticalAlignment.Stretch;
                    player.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;

                    SystemTray.IsVisible = false;

                }
                else
                {
                    TitlePanel.Visibility = System.Windows.Visibility.Visible;

                    player.Height = Double.NaN;
                    player.Width = Double.NaN;

                    player.VerticalAlignment = System.Windows.VerticalAlignment.Stretch;
                    player.HorizontalAlignment = System.Windows.HorizontalAlignment.Stretch;

                    SystemTray.IsVisible = true;
                }
            }

---

此代码将使您的页面横向：

void appBarButton_Click(object sender, EventArgs e)
{
   this.SupportedOrientations = SupportedPageOrientation.Landscape;
   this.Orientation = PageOrientation.Landscape;
}

---

此代码将使您的页面横向：

void appBarButton_Click(object sender, EventArgs e)
{
   this.SupportedOrientations = SupportedPageOrientation.Landscape;
   this.Orientation = PageOrientation.Landscape;
}

---

此代码将使您的页面横向：

void appBarButton_Click(object sender, EventArgs e)
{
   this.SupportedOrientations = SupportedPageOrientation.Landscape;
   this.Orientation = PageOrientation.Landscape;
}

---

此代码将使您的页面横向：

void appBarButton_Click(object sender, EventArgs e)
{
   this.SupportedOrientations = SupportedPageOrientation.Landscape;
   this.Orientation = PageOrientation.Landscape;
}