ADO WillChangeRecordset i RecordsetChangeComplete Events
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Wydarzenie WillChangeRecordset
Zdarzenie WillChangeRecordset jest wyzwalane, zanim operacja zmieni Recordset.
Uwaga: zanim to zdarzenie powróci, ustaw parametr status na adStatusCancel, aby anulować operację, która spowodowała to zdarzenie, lub ustaw go na adStatusUnwantedEvent, aby zapobiec kolejnym powiadomieniom.
Zdarzenie RecordsetChangeComplete
Zdarzenie RecordsetChangeComplete jest wyzwalane po zmianie Recordset.
Uwaga: zanim to zdarzenie powróci, ustaw parametr status na adStatusUnwantedEvent, aby zapobiec kolejnym powiadomieniom.
Uwaga: Zdarzenie WillChangeRecordset i RecordsetChangeComplete może wystąpić podczas wywoływania metody Requery lub metody Open obiektu Recordset.
Składnia
WillChangeRecord reason,status,objRs
RecordsetChangeComplete 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 Wartości
| Constant | Value | Description |
|---|---|---|
| adRsnRequery | 7 | An operation requeried the Recordset |
| adRsnResynch | 8 | An operation resynchronized the Recordset with the database |
| adRsnClose | 9 | An operation closed the Recordset |
EventStatusEnum Wartości
| 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 |
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