c# - Select all objects in a list -

i have 3 objects:

artist, albums , track.

the artists stored in list<artist> , inside artist object there's list artist's albums (list<albums>) , in album object there yet list tracks (list<track>)

how go selecting tracks @ once?

is there way do:

tracklist.addrange(artistlist.albums.tracks); 

until have been doing this:

foreach (artist artist in artistlist)   {      if (artist.albums != null)      {        foreach(album album in artist.albums)        {          context.addrange(album.tracks);        }      }    } 

you try

tracklist.addrange(   artistlist.selectmany(a => a.albums)             .selectmany(a => a.tracks)) 

or effect. i'm little rusty on selectmany, i'm confident can used here.

i'm not sure whether null check needed here, too. can add where clause before selectmany.