private void Interface_StockByCustomer(DateTime lastupdate) { List <StockByCustomer> lstStkCust; try { //eventLog1.WriteEntry("Get Stock By Customer", EventLogEntryType.Information); //get data from oracle database using (QueryBLL oraQuery = new QueryBLL()) { lstStkCust = oraQuery.GetStockByCustomer(); } // Insert data to SQLite database if (lstStkCust != null) { //eventLog1.WriteEntry("SQLite Stock By Customer", EventLogEntryType.Information); using (InterfaceBLL infBll = new InterfaceBLL()) { infBll.InsertStockByCustomer(lstStkCust, lastupdate); infBll.DeleteStockByCustomer(); infBll.UpdateStockByCustomer(); } } } catch (Exception ex) { eventLog1.WriteEntry(ex.Message, EventLogEntryType.Error); } }