Example of ref on reference type

    class Program

    {

        static public void change(List<string> thing)

        {

            thing[0] += "  adjusted";

            List<string> temp = new List<string>();

            temp.Add("change");

            thing = temp;

        }

        static public void refChange(ref List<string> thing)

        {

            List<string> temp = new List<string>();

            temp.Add("refChange");

            thing = temp;

        }

       

        static void Main(string[] args)

        {

            List<string> temp = new List<string>();

            temp.Add("hody doe");

            change(temp);

            Console.WriteLine(temp[0]);

            refChange(ref temp);

            Console.WriteLine(temp[0]);

        }

    }