using System;

//using System.Collections;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Text.RegularExpressions;

using HashidsNet;

​

public class Program

{

    public static void Main()

    {

        for (int i = 0; i < 2000; i++) 

        {

            var hashids = new Hashids(Guid.NewGuid().ToString(), 5, "23456789ABCDEFGHJKLMNPQRSTUVWKYZ");

            var redeemApprovalCode = DateTime.Now.ToString("MMddyy") + "-" + hashids.Encode(5);

            Console.WriteLine(redeemApprovalCode);

        }

​

    }

​

}

​

​