private void PopulateAssignedGenres(Song song)
{
var allGenres = repository.Genres();
var SongGenres = new HashSet <int>(song.SongGenres.Select(g => g.GenreID));
var viewModel = new List <AssignedGenre>();
foreach (var genre in allGenres)
{
viewModel.Add(new AssignedGenre
{
GenreID = genre.GenreID,
Name = genre.Name,
Assigned = SongGenres.Contains(genre.GenreID)
});
}
ViewData["Genres"] = viewModel;
}