using System;

using System.IO;

​

public class Program

{

    public static void Main()

    {

        var filePath = $@"\\MyFIleShare\payplusfiles\redcard\import\pickup\EPVTORC202306270303.pgp";

        Console.WriteLine("Hello World:"+filePath);

        for (int counter = 0; counter < 10; counter++)

        {

            var nowLong = DateTime.Now.ToFileTime();

            Console.WriteLine("Hello World now:" + nowLong);

            var xString = nowLong.ToString("X");

            Console.WriteLine("Hello World X:  " + xString);

            //var newName = Path.GetFileNameWithoutExtension(filePath) + "_" + nowLong + "_" + Path.GetExtension(filePath);

            var x4String = xString.Substring((xString.Length - 4), 4);

            var newXName = Path.GetFileNameWithoutExtension(filePath) + "_" + x4String + "_" + Path.GetExtension(filePath);

            //Console.WriteLine("Hello World now:" + newName);

            Console.WriteLine("Hello World X4:" + newXName);

        }

    }

}