c# - Linq not populating the other list -

for reason 2nd list list2 isn't being populated, when should.

        var list1 = new list<object1>();         //populated list1 here          var list2 = new list<object1>();          list1.orderbydescending(o => o.cnt).take(10).select(s =>         {             list2.add(s);             return s;         }); 

list2 should have 10 entries now, doesn't? how possible?

it's not working because linq expressions lazily evaluated. select function not executed until iterate on it, never do.

if add .tolist(); end, should see working.

however, not idiomatic way you're trying do. commenter suggested, better:

var list2 = list1.orderbydescending(o => o.cnt).take(10).tolist(); 

or add values populated list,

list2.addrange(list1.orderbydescending(o => o.cnt).take(10));