void Attach() { _contentProperty.Attach(OnContentChanged); _wrapProperty.Attach(OnLayoutPropertyChanged); _scrollProperty.Attach(OnLayoutPropertyChanged); HorizontalAlignmentProperty.Attach(OnLayoutPropertyChanged); VerticalAlignmentProperty.Attach(OnLayoutPropertyChanged); FontFamilyProperty.Attach(OnFontChanged); FontSizeProperty.Attach(OnFontChanged); HorizontalContentAlignmentProperty.Attach(OnLayoutPropertyChanged); VerticalContentAlignmentProperty.Attach(OnLayoutPropertyChanged); }