public List<up_IFCDC_Listar_PeriodosResult> listarPeriodos() { SSIA2013DataContext dataContext = null; try { dataContext = new SSIA2013DataContext(ConfigurationManager.ConnectionStrings["CSSSIA2013"].ToString()); List<up_IFCDC_Listar_PeriodosResult> lstPeriodos = dataContext.up_IFCDC_Listar_Periodos().ToList(); return lstPeriodos; } catch (Exception ex) { throw ex; } finally { if (dataContext != null) { dataContext.Dispose(); } } }