saml entity id

var m = new your model ();Db. Your Model.add (m);Db. SaveChange ();Response.Write (m.id); Perform. SaveChange () The ID value can be obtained directly after saving.There is no ID value before saving.When the Entity Framework inserts data into a database, if the primary key field is an auto-increment identity column, the self-increment is returned to the property

A colleague suddenly came to me, said he encountered a problem, in the call NHibernate update data when the error, said there is data row lock. Look at the code, no problem. It is not a problem to insert the database directly in the Pl/sql developer. There should be no transaction not committed, the table is locked. But we are low level, to prevent in case, or restart the database. After a hard reboot, try again, the problem is still, several times sunset red. I later changed the update to in

Entid the ID of the specified entityvoid Signent (Acdbobjectid entid){Acdbentity *pent = NULL;Acdbblockreference *pref;Open the corresponding entityAcad::errorstatus es = acdbopenobject (pent, Entid, Zcdb::kforread, false);if (acad::eok! = es){acutprintf (_t ("\ n" \ nthe entity that opened the corresponding ID failed! "));return;}if (Pent->iskindof (acdbblockref