If the cursor is not yet initialized, MovePrevUnique is identical to MoveLast(LockingInfo). Otherwise, move the cursor to the previous non-duplicate key in the database, and store that key and associated datum in Current. MovePrevUnique will return false if no non-duplicate key/data pairs exist after the cursor position in the database. 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, MovePrevUnique is successful, and any existing bytes are returned.

Namespace:  BerkeleyDB
Assembly:  libdb_dotnet52 (in libdb_dotnet52.dll) Version:


public bool MovePrevUnique(
	DatabaseEntry key,
	DatabaseEntry data,
	LockingInfo info
Visual Basic (Declaration)
Public Function MovePrevUnique ( _
	key As DatabaseEntry, _
	data As DatabaseEntry, _
	info As LockingInfo _
) As Boolean
Visual C++
bool MovePrevUnique(
	DatabaseEntry^ key, 
	DatabaseEntry^ data, 
	LockingInfo^ info


Type: BerkeleyDB..::.DatabaseEntry
The retrieved key
Type: BerkeleyDB..::.DatabaseEntry
The retrieved data
Type: BerkeleyDB..::.LockingInfo
The locking behavior to use.

Return Value

True if the cursor was positioned successfully, false otherwise.


If positioning the cursor fails, Current will contain an empty KeyValuePair<(Of <(TKey, TValue>)>).

See Also