/// <summary author="Caitlin Abelson" created="2019/01/23">
        /// RetrieveAllSuppliers takes the list that was returned from the DataAccess Layer
        /// and pushes it to the presentation layer so that it can be displayed in the data grid
        /// </summary>
        /// <returns></returns>
        public List <Supplier> RetrieveAllSuppliers()
        {
            List <Supplier> suppliers = null;

            try
            {
                suppliers = _supplierAccessor.SelectAllSuppliers();
            }
            catch (Exception ex)
            {
                ExceptionLogManager.getInstance().LogException(ex);
                throw ex;
            }

            return(suppliers);
        }