using iWare_SCADA_Model.TableModelSC; using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; namespace iWare_SCADA_BusinessLogical { public class AlarmLogManager { public static List GetAlarmLogs() { using (SCModel db = new SCModel()) { //查询所有 var query = db.AlarmLog.ToList();//这个不是延迟查询 return query; } } public static void UpdateAlarmLogs(AlarmLog log) { using (SCModel db = new SCModel()) { //查询所有 var query = db.AlarmLog.Where(o => o.id == 1).FirstOrDefault();//这个不是延迟查询 query.alarmMsg = $"测试啊!{DateTime.Now.ToString()}"; db.SaveChanges(); } } } }