Convert ObjectNo to ObjectId

Convert.cs

using System;
using System.Linq;

//Usage examples:
//
//star Convert.cs 6513
//star Convert.cs Blx
//
//Warning: the output goes to Starcounter Administrator

namespace Convert
{
    public class Program
    {
        static void Main(string[] args)
        {
            if (args.Length > 0)
            {
                var input = args[0];

                if (input.All(char.IsDigit))
                {
                    UInt64 inputNo = Convert.ToUInt64(input);
                    string no = Starcounter.DbHelper.Base64EncodeObjectNo(inputNo);
                    Console.WriteLine("Base64-encoding " + input + " => " + no);
                }
                else
                {
                    UInt64 inputNo = Starcounter.DbHelper.Base64DecodeObjectID(input);
                    Console.WriteLine("Base-64 decoding " + input + " => " + inputNo);
                }
            }
            else
            {
                Console.WriteLine("Provide an argument that is either an ObjectID or ObjectNo");
            }
        }
    }
}