If the cursor is not yet initialized, MovePrev is identical to
MoveLast()()(). Otherwise, move the cursor to the previous
key/data pair of the database, and store that pair in
Current. In the presence of duplicate key values, the
value of Current.Key may not change. If
either the key or the data is partial DatabaseEntry,
its PartialLen bytes starting
PartialOffset bytes from the beginning
of the retrieved data record are returned as if they comprised the
entire record. If any or all of the specified bytes do not exist
in the record, MovePrev is successful, and any existing
bytes are returned.
Namespace:
BerkeleyDBAssembly: libdb_dotnet181 (in libdb_dotnet181.dll) Version: 18.1.32.0
Syntax
C# |
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public bool MovePrev( DatabaseEntry key, DatabaseEntry data ) |
Visual Basic (Declaration) |
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Public Function MovePrev ( _ key As DatabaseEntry, _ data As DatabaseEntry _ ) As Boolean |
Visual C++ |
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public: bool MovePrev( DatabaseEntry^ key, DatabaseEntry^ data ) |
Parameters
- key
- Type: BerkeleyDB..::.DatabaseEntry
The retrieved key
- data
- Type: BerkeleyDB..::.DatabaseEntry
The retrieved data
Return Value
True if the cursor was positioned successfully, false otherwise.Remarks
If positioning the cursor fails, Current contains
an empty KeyValuePair<(Of <(TKey, TValue>)>).