public CustomTabViewItem(Chapter chapter)
{
//this.DefaultStyleKey = typeof(CustomTabViewItem);
TabItem = new TabViewItem();
Id = ++_objectNN;
Chapter = chapter;
TabItem.Header = Chapter.BookTabHeader();
//Icon = new SymbolIcon(Symbol.Document);
BitmapIcon bitmapIcon = new BitmapIcon();
bitmapIcon.ShowAsMonochrome = false;
bitmapIcon.UriSource = new Uri("ms-appx:///Assets/favicon.png");
TabItem.Icon = bitmapIcon;
TabContent = new TabContent(chapter);
// we intentionaly left Conten uninitialized. TabContent becomes content of page
//TabItem.Content = new TabContent(chapter);
}
