private void GoToShowCommands()
        {
            if ("all" == commands[1].ToLower())
            {
                if (dataStore is IShow)
                {
                    IShow store = (IShow)dataStore;
                    Console.Clear();
                    Console.WriteLine("|   ID\t|   NAME\t|\tAGE\t|\tPHONE\t\t|");
                    Console.WriteLine(new string('-', 65));

                    foreach (Person person in store.ShowAll())
                    {
                        Console.WriteLine(person);
                    }

                    Console.ReadLine();
                }
                else
                {
                    throw new ArgumentException("Wrong object");
                }
            }
            else if (Int32.Parse(commands[1]) > 0)
            {
                if (dataStore is IShow)
                {
                    IShow store = (IShow)dataStore;
                    Console.Clear();
                    Console.WriteLine("|   ID\t|   NAME\t|\tAGE\t|\tPHONE\t\t|");
                    Console.WriteLine(new string('-', 65));
                    Console.WriteLine(store.ShowOnePerson(Int32.Parse(commands[1])));
                    Console.ReadLine();
                }
                else
                {
                    throw new ArgumentException("Wrong object");
                }
            }
            else
            {
                throw new ArgumentException("Input command is incorrect");
            }
        }