Flatten List in LINQ

I have a LINQ query which returns IEnumerable<List<int>> but i want to return only List<int> so i want to merge all my record in my IEnu开发者_JAVA技巧merable<List<int>> to only one array.

Example :

IEnumerable<List<int>> iList = from number in
    (from no in Method() select no) select number;

I want to take all my result IEnumerable<List<int>> to only one List<int>

Hence, from source arrays: [1,2,3,4] and [5,6,7]

I want only one array [1,2,3,4,5,6,7]

Thanks

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Try SelectMany()

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

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With query syntax:

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

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

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

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

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Like this?

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