CRecordset::SetBookmark
Positions the recordset on the record containing the specified bookmark.
void SetBookmark(
const CDBVariant& varBookmark
);
Parameters
- varBookmark
A reference to a CDBVariant object containing the bookmark value for a specific record.
Remarks
To determine if bookmarks are supported on the recordset, call CanBookmark. To make bookmarks available if they are supported, you must set the CRecordset::useBookmarks option in the dwOptions parameter of the Open member function.
备注
If bookmarks are unsupported or unavailable, calling SetBookmark will result in an exception being thrown. Bookmarks are not supported on forward-only recordsets.
To first retrieve the bookmark for the current record, call GetBookmark, which saves the bookmark value to a CDBVariant object. Later, you can return to that record by calling SetBookmark using the saved bookmark value.
备注
After certain recordset operations, you should check the bookmark persistence before calling SetBookmark. For example, if you retrieve a bookmark with GetBookmark and then call Requery, the bookmark may no longer be valid. Call CDatabase::GetBookmarkPersistence to check whether you can safely call SetBookmark.
For more information about bookmarks and recordset navigation, see the articles Recordset: Bookmarks and Absolute Positions (ODBC) and Recordset: Scrolling (ODBC).
Exceptions
This method can throw exceptions of type CDBException* and CMemoryException*.
Requirements
Header: afxdb.h
See Also
Reference
CRecordset::SetAbsolutePosition
CDatabase::GetBookmarkPersistence