private void DateOnMouseEnter(DateTime hoverDateTime)
        {
            if (IsRange)
            {
                DatePicker.HoverDateTime = hoverDateTime;

                DatePicker.InvokeStateHasChanged();
            }

            int    focusIndex  = DatePicker.GetOnFocusPickerIndex();
            string placeholder = DatePicker.GetFormatValue(hoverDateTime, focusIndex);

            DatePicker.ChangePlaceholder(placeholder, focusIndex);
        }