using System;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        string inputString = "9a05a4c6-7de1-41c4-9fbd-b5b3098384fe" + DateTime.Now.Ticks;

        byte[] bytes = Encoding.UTF8.GetBytes(inputString);

        string base64String = Convert.ToBase64String(bytes);

        Console.WriteLine(base64String);

    }

}