Convert nested type in C# using delegates / LINQ

Question

How can I convert a List<List<string>> to a List<string[]> in C# in a concise way using delegates/LINQ?

Answer 1

I believe this will do it:

var result = (from list in listOfLists select list.ToArray()).ToList()

Answer 2

List<List<string>> listOfLists = new List<List<string>>();

listOfLists.Add(new List<string>(){ "bla", "foo", "bar"});
listOfLists.Add(new List<string>() { "alfa", "beta", "gama" });
listOfLists.Add(new List<string>() { "earth", "moon", "sun" });
listOfLists.Add(new List<string>() { "cat", "dog", "owl" });

List<string[]> listOfArrays = new List<string[]>();

listOfArrays = listOfLists.Select(l => l.ToArray()).ToList();

Answer 3

var lists = new List<List<string>>();
List<string[]> arrays = lists.ConvertAll(l => l.ToArray());