public FramePageViewModel()
{
MainFrame = new Windows.UI.Xaml.Controls.Frame();
string navigationState = MainFrame.GetNavigationState();
MainFrame.Navigated += (sender, args) =>
{
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility =
MainFrame.CanGoBack ? AppViewBackButtonVisibility.Visible : AppViewBackButtonVisibility.Collapsed;
};
MainFrame.Navigate(typeof(HomePage));
SystemNavigationManager.GetForCurrentView().BackRequested += OnBackRequested;
NavigateCommand = new DelegateCommand(NavigateCommandImpl, NavigateCommandCanExecute);
}
/// <returns>
/// The string-form serialized navigation history. See Remarks.
/// </returns>
public string GetNavigationState()
{
var navigationState = _frame.GetNavigationState();
return(navigationState);
}