Converting a List to a comma separated string

Question

Is there a way to take a List and convert it into a comma separated string?

I know I can just loop and build it, but somehow I think some of you guys a more cool w

Answer 1

Simple solution is

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

I used it just now in my code, working funtastic.

Answer 2

My "clever" entry:

        List<int> list = new List<int> { 1, 2, 3 };
        StringBuilder sb = new StringBuilder();
        var y = list.Skip(1).Aggregate(sb.Append(x.ToString()),
                    (sb1, x) =>  sb1.AppendFormat(",{0}",x));

        // A lot of mess to remove initial comma
        Console.WriteLine(y.ToString().Substring(1,y.Length - 1));

Just haven't figured how to conditionally add the comma.