for simple case, class foo has member i , , have collection of foos, ienumerable<foo> foos , , want end collection of foo's member i , list<typeofi> result . question : preferable use foreach (option 1 below) or form of linq (option 2 below) or other method. or, perhaps, it not worth concerning myself (just choose personal preference). option 1 : foreach (foo foo in foos) result.add(foo.i); option 2 : result.addrange(foos.select(foo => foo.i)); to me, option 2 looks cleaner, i'm wondering if linq heavy handed can achieved such simple foreach loop. looking opinions , suggestions. i prefer second option on first. however, unless there reason pre-create list<t> , use addrange , avoid it. personally, use: list<typeofi> results = foos.select(f => f.i).tolist(); in addition, not use tolist() unless need true list<t> , or need force execution immediate instead of deferred. if need collection of "i"
