using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        string FirstName = "this is the upload string\\JOE";

​

        if (FirstName.ToLower().Contains("upload"))

        {

            if (FirstName.Contains("\\"))

                FirstName = FirstName.Split('\\').Last();

        }

        Console.WriteLine(FirstName);

    }

}

​

​

​