WinRTXamlToolkit.Controls.Calendar.OnCalendarButtonStyleChanged C# (CSharp) Method

        private static void OnCalendarButtonStyleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            Style newStyle = e.NewValue as Style;
            Style oldStyle = e.OldValue as Style;
            Calendar c = d as Calendar;

            if (newStyle != null && c != null)
            {
                CalendarItem monthControl = c.MonthControl;

                if (monthControl != null && monthControl.YearView != null)
                {
                    foreach (UIElement child in monthControl.YearView.Children)
                    {
                        CalendarButton calendarButton = child as CalendarButton;

                        if (calendarButton != null)
                        {
                            EnsureCalendarButtonStyle(calendarButton, oldStyle, newStyle);
                        }
                    }
                }
            }
        }