I'm braking my head over this and tried a lot of version but it's just not working for me I need to get a distinct ordered by id. I understand that after distinct I need to order my list, but i can't get any identifier. And the results I'm getting has no logical order (1,2, 8, 4, 5,6,9). Please advise me .
public class TakeAway
{
public int TakeAwayId { get; set; }
public int GenreId { get; set; }
public virtual Genre genre { get; set; }
}
public class Genre
{
public int GenreId { get; set; }
public string GenreName { get; set; }
public List<TakeAway> TakeAwys { get; set; }
}
var allDishGenre =
db.TaKeAways.Select(x => x.genre.GenreName).Distinct().OrderBy(g => g).ToList();
ViewBag.GenreTab = allDishGenre;
This:
db.TaKeAways.Select(x => x.genre.GenreName).Distinct()
returns a distinct list of names (Strings), which do not have any identifiers. You need:
db.TakeAways
.GroupBy(ta => ta.genre.GenreName)
.Select(g => g.FirstOrDefault())
.OrderBy(ta => ta.TakeAwayId)
.ToList()
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