/// <summary>
        /// Supports output to dispaly all movies that the member is currently borrowing
        /// </summary>
        /// <param name="borrowing">all movies that the member is currently borrowing</param>
        /// <returns>text of all movie information</returns>
        public static string Member4(Movie[] borrowing)
        {
            Console.WriteLine("\n=====Your borrowings=====");
            string text = "";

            foreach (Movie m in borrowing)
            {
                if (m != null)
                {
                    text += string.Format(
                        "Title: {0} \n" +
                        "  -Starring: {1} \n" +
                        "  -Director: {2} \n" +
                        "  -Duration: {3} \n" +
                        "  -Genre: {4} \n" +
                        "  -Classification: {5} \n" +
                        "  -Release date: {6} \n",
                        m.title, m.starring, m.director, m.duration,
                        GenreMethods.toString(m.genre), ClassificationMethods.toString(m.classification),
                        m.releaseDate);
                    text += "\n";
                }
            }

            return(text);
        }
        /// <summary>
        /// Supports output of member option 1 (display all movies)
        /// </summary>
        /// <param name="movies">movie collection</param>
        /// <returns>text contains all movie information</returns>
        public static string Member1(Movie[] movies)
        {
            Console.WriteLine("\n=====All movies=====");
            string text = "";

            foreach (Movie m in movies)
            {
                text += String.Format(
                    "Title: {0} \n" +
                    "  -Starring: {1} \n" +
                    "  -Director: {2} \n" +
                    "  -Duration: {3} \n" +
                    "  -Genre: {4} \n" +
                    "  -Classification: {5} \n" +
                    "  -Release date: {6} \n" +
                    "  -Availability {7} \n" +
                    "  -Number of rented {8} \n",
                    m.title, m.starring, m.director, m.duration,
                    GenreMethods.toString(m.genre), ClassificationMethods.toString(m.classification),
                    m.releaseDate, m.NumCopies, m.NumBorrowed);
                text += "\n";
            }

            return(text);
        }