Using AddNew in Immediate and Batch Modes

The behavior of the AddNew method depends on the updating mode of the Recordset object and whether you pass the FieldList and Values arguments.

In immediate update mode (in which the provider writes changes to the underlying data source once you call the Update method), calling the AddNew method without arguments sets the EditMode property to adEditAdd. The provider caches any field value changes locally. Calling the Update method posts the new record to the database and resets the EditMode property to adEditNone. If you pass the FieldList and Values arguments, ADO immediately posts the new record to the database (no Update call is necessary); the EditMode property value does not change (adEditNone).

In batch update mode, calling the AddNew method without arguments sets the EditMode property to adEditAdd. The provider caches any field value changes locally. Calling the Update method adds the new record to the current Recordset and resets the EditMode property to adEditNone, but the provider does not post the changes to the underlying database until you call the UpdateBatch method. If you pass the FieldList and Values arguments, ADO sends the new record to the provider for storage in a cache; you need to call the UpdateBatch method to post the new record to the underlying database. For more information about Update and UpdateBatch, see Chapter 5: Updating and Persisting Data.