CRecordset::MovePrev
Makes the first record in the previous rowset the current record.
void MovePrev( );
Заметки
If you have not implemented bulk row fetching, your recordset has a rowset size of 1, so MovePrev simply moves to the previous record.
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This member function is not valid for forward-only recordsets. |
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When you move through a recordset, you cannot skip deleted records. See the IsDeleted member function for details. |
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Calling any of the Move functions throws an exception if the recordset has no records. To determine whether the recordset has any records, call IsBOF and IsEOF. |
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It is also recommended that you call IsBOF before calling MovePrev. For example, if you have scrolled ahead of the beginning of the recordset, IsBOF will return nonzero; a subsequent call to MovePrev would throw an exception. |
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If you call any of the Move functions while the current record is being updated or added, the updates are lost without warning. |
For more information about recordset navigation, see the articles Recordset: Scrolling (ODBC) and Recordset: Bookmarks and Absolute Positions (ODBC). For more information about bulk row fetching, see the article Recordset: Fetching Records in Bulk (ODBC).
Исключения
This method can throw exceptions of type CDBException* and CMemoryException*.
Пример
See the example for IsBOF.
Требования
Header: afxdb.h