замена местами переменных

using System;
namespace Lectures
{
    class Program
    {
        static void Main()
        {
            string name = "Глеб";
            string surname = "Егорыч";
            Console.WriteLine($"{name}-{surname}");
            (name, surname) = (surname, name);
            Console.WriteLine($"{name}-{surname}");
        }
    }
}