public static void Menu() { Start: Console.Clear(); Console.WriteLine("1. See all averages\n\n2. Delete all averages\n\n3. Delete all averages by ID\n"); switch (Console.ReadLine()) { case "-1": break; case "1": Average.Show(); goto Start; case "2": DeleteAll(); goto Start; case "3": DeleteByID(); goto Start; default: Console.WriteLine("Write a valid value !"); Console.ReadLine(); goto Start; } }