public Button CreateButtons(int content)
        {
            Button btn = new Button();

            btn.ClickMode = ClickMode.Press;
            btn.Content   = content.ToString();
            btn.SetResourceReference(Button.StyleProperty, "AyDateBoxCalendar.Button");
            AyCalendarService.SetClickSecondButtonsEnabled(btn, content, SelectedDateTime, MinDateTime, MaxDateTime, DisabledDatesStrings, setOpposite);
            btn.Tag    = content;
            btn.Click += Btn_Click;
            return(btn);
        }