private void ChromelessWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e)
{
object frameContent = Navigator.Frame.Content;
PDFViewerPage page = frameContent as PDFViewerPage;
ViewModel viewModel = null;
if (page != null)
{
page.Unload();
viewModel = page.DataContext as ViewModel;
page = null;
}
else
{
FrontPage frontPage = frameContent as FrontPage;
viewModel = frontPage.DataContext as ViewModel;
frontPage = null;
}
if (viewModel != null)
{
viewModel.Dispose();
}
Navigator.Frame = null;
}