Eventi ADO WillMove e MoveComplete
❮ Riferimento completo dell'oggetto Recordset
L'evento WillMove
L'evento WillMove viene attivato prima che un'operazione modifichi la posizione corrente nel Recordset.
Nota: prima che questo evento si ripresenti, imposta il parametro status su adStatusCancel per annullare l'operazione che ha causato questo evento o impostalo su adStatusUnwantedEvent per evitare notifiche successive.
L'evento MoveComplete
L'evento MoveComplete viene attivato dopo la modifica della posizione corrente nel Recordset.
Nota: prima che questo evento si ripresenti, imposta il parametro status su adStatusUnwantedEvent per evitare notifiche successive.
Nota: l'evento WillMove o MoveComplete può verificarsi quando si chiama uno dei seguenti metodi Recordset: Open, Move, MoveFirst, MoveLast, MoveNext, MovePrevious, AddNew e Requery. Questi eventi possono verificarsi anche a causa delle seguenti proprietà: Filter, Index, Bookmark, AbsolutePage e AbsolutePosition.
Sintassi
WillMove reason,status,objRs
MoveComplete reason,objErr,status,objRs
| Parameter | Description |
|---|---|
| reason | An EventReasonEnum value that specifies the reason for this event |
| status | An EventStatusEnum value that indicates the status of the execution of the event |
| objErr | The name of an Error object that describes the error if status is set to adStatusErrorsOccurred, otherwise it is not set |
| objRs | The name of the Recordset object that triggered this event |
EventReasonEnum valori
| Constant | Value | Description |
|---|---|---|
| adRsnRequery | 7 | An operation requeried the Recordset |
| adRsnMove | 10 | An operation moved the record pointer within the Recordset |
| adRsnMoveFirst | 12 | An operation moved the record pointer to the first record in the Recordset |
| adRsnMoveNext | 13 | An operation moved the record pointer to the next record in the Recordset |
| adRsnMovePrevious | 14 | An operation moved the record pointer to the previous record in the Recordset |
| adRsnMoveLast | 15 | An operation moved the record pointer to the last record in the Recordset |
EventStatusEnum Valori
| Constant | Value | Description |
|---|---|---|
| adStatusOK | 1 | The operation that caused the event was successful |
| adStatusErrorsOccurred | 2 | The operation that caused the event failed |
| adStatusCantDeny | 3 | The operation that caused the event cannot be cancelled |
| adStatusCancel | 4 | The operation that caused the event is cancelled |
| adStatusUnwantedEvent | 5 | Prevents subsequent notifications before the event method has finished executing |
❮ Riferimento completo dell'oggetto Recordset