public static void Remove(SlideShowItem SlideShowItem)
        {
            //更新資料庫
            SlideShowItemAccessor.Delete(SlideShowItem);

            //更新記憶体
            SlideShowItemCache.Remove(SlideShowItem);

            //刪除圖片
            if (string.IsNullOrWhiteSpace(SlideShowItem.Image) == false)
            {
                System.IO.File.Delete(SlideShowItemManager.GetPhysicalUploadPath() + SlideShowItem.Image);
            }
        }