/// <summary>
        /// Creates a new Expense Review record in the database.
        /// </summary>
        /// <param name="expense">An Expense Review object.</param>
        private void CreateExpenseReview(ExpenseReview review)
        {
            // Business logic.
            review.DateApproved = DateTime.Now;

            Console.WriteLine(review.ToString());

            // Persist data.
            ExpenseReviewDataAccess dac = new ExpenseReviewDataAccess();
            try
            {
                dac.Create(review);
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.Message);
                throw ex;
            }
        }
 /// <summary>
 /// Retrieves a list of Expense Reviews belonging to an Expense
 /// </summary>
 /// <param name="expenseID">An ExpenseID.</param>
 /// <returns>A List of Expense Reviews.</returns>
 public List<ExpenseReview> ListExpenseReviews(long expenseID)
 {
     // Retrieve data.
     ExpenseReviewDataAccess dac = new ExpenseReviewDataAccess();
     try
     {
         return dac.SelectByExpenseID(expenseID);
     }
     catch (Exception ex)
     {
         Console.WriteLine(ex.Message);
         throw ex;
     }
 }