Flatten List in LINQ

Question

I have a LINQ query which returns IEnumerable> but i want to return only List so i want to merge all my record in

Answer 1

If you have a List<List<int>> k you can do

List<int> flatList= k.SelectMany( v => v).ToList();

Answer 2

Try SelectMany()

var result = iList.SelectMany( i => i );

Answer 3

Like this?

var iList = Method().SelectMany(n => n);

Answer 4

iList.SelectMany(x => x).ToArray()

Answer 5

With query syntax:

var values =
from inner in outer
from value in inner
select value;