private void GetIcons()
        {
            icons.Clear();

            var directoryTypes = directoryTypeService.GetAll().ToList();

            foreach (var item in directoryTypes)
            {
                var icon = iconService.GetById(item.IconId);
                if (icon == null)
                {
                    continue;
                }

                var base64 = Convert.ToBase64String(icon);

                var img = $"<img width=\"16\" height=\"16\" src=\"data:image/png;base64,{base64}\" />";

                icons[item.Id] = img;
            }
        }