ADO WillChangeRecordset and RecordsetChangeComplete Events
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Die WillChangeRecordset-geleentheid
Die WillChangeRecordset-gebeurtenis word geaktiveer voordat 'n bewerking die Recordset verander.
Let wel: Voordat hierdie gebeurtenis terugkeer, stel die statusparameter op adStatusCancel om die bewerking wat hierdie gebeurtenis veroorsaak het te kanselleer of stel dit op adStatusUnwantedEvent om daaropvolgende kennisgewings te voorkom.
Die RecordsetChangeComplete-gebeurtenis
Die RecordsetChangeComplete-gebeurtenis word geaktiveer nadat 'n Recordset verander het.
Let wel: Voordat hierdie gebeurtenis terugkeer, stel die statusparameter op adStatusUnwantedEvent om daaropvolgende kennisgewings te voorkom.
Let wel: Die WillChangeRecordset en die RecordsetChangeComplete-gebeurtenis kan voorkom wanneer die Requery-metode of die Open-metode van 'n Recordset-objek geroep word.
Sintaksis
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-waardes
| 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-waardes
| 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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