using System;

using System.Text.RegularExpressions;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

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

        for (int i = 0; i < 128; i++)

        {

            //if(!Regex.IsMatch(((char)i).ToString(),"(?i)[a-z0-9]"))

            //Console.WriteLine((char)i + ": " + char.IsPunctuation((char)i));  

            if (char.IsPunctuation((char)i))

                listOfNonPunctuationCharacters.Add(((char)i).ToString());

        }

​

        string groupName;

        foreach (string character in listOfNonPunctuationCharacters)

        {

            groupName = "group" + character + "name";

            try

            {

                Console.WriteLine("groupName: " + groupName);

                Regex r = new Regex("123 (?<" + groupName + ">ABC) 123");

                Match m = r.Match("123 ABC 123");

                Console.WriteLine("Captured group: " + m.Groups[groupName].Value);

            }

            catch (Exception e)

            {

                Console.WriteLine(e.Message.ToString());

            }

        }

    }

}