How to convert IEnumerable to one comma separated string?

Question

Say that for debugging purposes, I want to quickly get the contents of an IEnumerable into one-line string with each string item comma-separated. I can do it in a helper met

Answer 1

(a) Set up the IEnumerable:

        // In this case we are using a list. You can also use an array etc..
        List items = new List() { "WA01", "WA02", "WA03", "WA04", "WA01" };

(b) Join the IEnumerable Together into a string:

        // Now let us join them all together:
        string commaSeparatedString = String.Join(", ", items);

        // This is the expected result: "WA01, WA02, WA03, WA04, WA01"

(c) For Debugging Purposes:

        Console.WriteLine(commaSeparatedString);
        Console.ReadLine();