using System;

using UnityEngine;

​

public class Program

{

    public static char[] alphaChar = new char[]{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'};

    public static void Main()

    {

        Console.WriteLine(getGenString(true, true, 2, 4, "ABCD", "WXYZ"));

    }

​

    public static string getGenString(bool alpha, bool numerical, int chunks, int chunkSize, string prefix = "", string suffix = "")

    {

        //No alpha / numerical choice yet.

        System.Random rnd = new System.Random();

        string genString = "";

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

        {

            for (int j = 0; j < chunkSize; j++)

            {

                if (rnd.Next(0, 2) == 0)

                {

                    genString = genString + alphaChar[rnd.Next(0, alphaChar.Length)];

                }else {

                    genString = genString + (rnd.Next(0,10)).ToString();    

                }

            }

​

            if (i != (chunks - 1))

            {

                genString = genString + "-";

            }

        }

​

        if (suffix != "") genString = genString + "-" + suffix;

        return prefix + "-" + genString;

    }

}

​