//Update
public void Update(DWH_ONTIME_DN DWH_ONTIME_DN)
{
db.Entry(DWH_ONTIME_DN).State = EntityState.Modified;
Save();
}
//Insert
public void Insert(DWH_ONTIME_DN DWH_ONTIME_DN)
{
db.DWH_ONTIME_DNs.Add(DWH_ONTIME_DN);
Save();
}