public static List <SelectListItem> GetCategories(int?selected, ILookupRepository repository)
{
var categoryList = new List <SelectListItem>();
var categories = repository.FetchCategoryInfos().Select(c_ => new CategoryInfo(c_)).ToList();
categories.ForEach(c => categoryList.Add(new SelectListItem
{
Text = c.FullCategoryName,
Value = c.CategoryId.ToString(),
Selected = selected.HasValue && (c.CategoryId == selected.Value)
}));
return(categoryList);
}