Check whether key appears in the database.

Namespace:  BerkeleyDB
Assembly:  libdb_dotnet181 (in libdb_dotnet181.dll) Version: 18.1.32.0

Syntax

C#
public bool Exists(
	DatabaseEntry key
)
Visual Basic (Declaration)
Public Function Exists ( _
	key As DatabaseEntry _
) As Boolean
Visual C++
public:
bool Exists(
	DatabaseEntry^ key
)

Parameters

key
Type: BerkeleyDB..::.DatabaseEntry
The key to search for.

Return Value

True if key appears in the database, false otherwise.

Remarks

If the operation occurs in a transactional database, the operation is implicitly transaction protected.

Exceptions

ExceptionCondition
BerkeleyDB..::.NotFoundException A NotFoundException is thrown if key is not in the database.
BerkeleyDB..::.KeyEmptyException A KeyEmptyException is thrown if the database is a QueueDatabase or RecnoDatabase database and key exists, but was never explicitly created by the application or was later deleted.

See Also