public void updateContent()
{
flipView.Items.Clear();
Overflows.Clear();
TextBlock = new RichTextBlock();
TextBlock.Margin = new Thickness(50);
TextBlock.Loaded += new RoutedEventHandler(textBlockLoaded);
foreach (Block block in Chapter.GetBlocks())
{
TextBlock.Blocks.Add(block);
}
flipView.Items.Add(TextBlock);
}