public void GoBack()
{
if (!CanGoBack)
{
return;
}
var page = PageStack[PageIndex];
var args = new HBNavigatingCancelEventArgs();
page.OnNavigatingFrom(args);
page.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
PageStack.Remove(page);
FrameGrid.Children.Remove(page);
page.OnNavigatedFrom(new HBNavigationEventArgs());
GC.SuppressFinalize(page);
GC.Collect();
page.Content = null;
page = null;
PageIndex--;
if (PageIndex >= 0)
{
page = PageStack[PageIndex];
//page.OnNavigatedTo(new HBNavigationEventArgs() { NavigationMode = NavigationMode.Back });
}
else
{
this.Visibility = Visibility.Collapsed;
}
}
private HBControl CreatePage(Type type)
{
if (PageIndex <= PageStack.Count - 1)
{
for (int i = PageStack.Count - 1; i > PageIndex; i--)
{
var _page = PageStack[i];
PageStack.Remove(_page);
FrameGrid.Children.Remove(_page);
}
}
var page = Activator.CreateInstance(type) as HBControl;
FrameGrid.Children.Add(page);
PageStack.Add(page);
PageIndex++;
return(page);
}
private HBControl CreatePage(Type type, string targetName = null)
{
if (PageIndex <= PageStack.Count - 1)
{
for (int i = PageStack.Count - 1; i > PageIndex; i--)
{
var _page = PageStack[i];
PageStack.Remove(_page);
FrameGrid.Children.Remove(_page);
}
}
if (PageStack.Count > 0 && !string.IsNullOrEmpty(targetName) && PageStack[PageIndex].TargetName == targetName)
{
return(PageStack[PageIndex]);
}
var page = Activator.CreateInstance(type) as HBControl;
page.TargetName = targetName;
FrameGrid.Children.Add(page);
PageStack.Add(page);
PageIndex++;
return(page);
}