How to write a program that handles commands

<pre>class Person
    {

        public string Name { get; set; }
        public string Surname { get; set; }
        public override string ToString()
        {
            return "Imie: " + Name + "Nazwisko: " + Surname;
        }
        public static void Main()
        {
            Console.WriteLine("Dokonaj wyboru");
            string choice = Console.ReadLine();
            string a = Console.ReadLine();
            string b = Console.ReadLine();
            Person person = new Person { Name = " " + a, Surname = " " + b };
            Console.WriteLine(person);
            while (true)

            {

                switch (choice)
                {
                    case "Add":
                        using (StreamWriter sw = File.AppendText(@"logowanie64.txt"))
                        {
                            
                            sw.WriteLine(person);
                        }
                        return;

                    case "Detail":
                        Detail();
                        return;

                    case "List":
                        List();
                        return;

                    case "Remove":
                        removeArtist();
                        return;

                    case "Save":
                        string json = JsonSerializer.Serialize(person);
                        File.WriteAllText(@"path.json", json);
                        return;
                }

            }
        }

        public static void removeArtist()
        {
            Console.Write("Please enter name you want to delete: ");
            string name = Console.ReadLine();
            List<string> lst = File.ReadAllLines(@"logowanie64.txt").Where(arg => !string.IsNullOrWhiteSpace(arg)).ToList();
            lst.RemoveAll(x => x.Split('.')[0].Equals(name));
            File.WriteAllLines(@"logowanie64.txt", lst);
        }

        public static void Detail()
        {

            string[] lines = File.ReadAllLines(@"logowanie64.txt");
            Console.WriteLine("Contents of WriteLines2.txt = ");

            foreach (string line in lines)
            {

                Console.WriteLine("\t" + line);
            }
        }

        public static void List()
        {

            string[] s = File.ReadAllLines(@"logowanie64.txt");

            foreach (string line in s)
                Console.WriteLine(line);

        }

    }