public up_Obtener_PeriodoActualResult obtenerPeriodoActual()
        {
            SSIA2013DataContext dataContext = null;

            try
            {
                dataContext = new SSIA2013DataContext(ConfigurationManager.ConnectionStrings["CSSSIA2013"].ToString());
                up_Obtener_PeriodoActualResult periodo = dataContext.up_Obtener_PeriodoActual().SingleOrDefault();

                return periodo;
            }

            catch (Exception ex)
            {
                throw ex;
            }

            finally
            {
                if (dataContext != null)
                {
                    dataContext.Dispose();
                }
            }
        }