Split a string by , using Regular Expressions in CSharp

using System;//  w  ww  .j a  va2s. c  o  m
using System.Text.RegularExpressions;

public class RegularExpressions
{
    public static void Main()
    {
        string s = "Oh, I hadn't thought of that";
        Regex regex = new Regex(@" |, ");
        char[] separators = new char[] {' ', ','};
        
        foreach (string sub in regex.Split(s))
        {
            Console.WriteLine("Word: {0}", sub);
        }
    }
}