Convert List<int> to string of comma separated values

Question

having a List<int> of integers (for example: 1 - 3 - 4) how can I convert it in a string of this type?

For example, the output should be:

string values = "1,3,4";

Answer 1

var nums = new List<int> {1, 2, 3};
var result = string.Join(", ", nums);

Answer 2

var ints = new List<int>{1,3,4};
var stringsArray = ints.Select(i=>i.ToString()).ToArray();
var values = string.Join(",", stringsArray);