Store the key/data pair in the database only if it does not already appear in the database.

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

Syntax

C#
public void PutNoDuplicate(
	DatabaseEntry key,
	DatabaseEntry data,
	Transaction txn
)
Visual Basic (Declaration)
Public Sub PutNoDuplicate ( _
	key As DatabaseEntry, _
	data As DatabaseEntry, _
	txn As Transaction _
)
Visual C++
public:
void PutNoDuplicate(
	DatabaseEntry^ key, 
	DatabaseEntry^ data, 
	Transaction^ txn
)

Parameters

key
Type: BerkeleyDB..::.DatabaseEntry
The key to store in the database
data
Type: BerkeleyDB..::.DatabaseEntry
The data item to store in the database
txn
Type: BerkeleyDB..::.Transaction
If the operation is part of an application-specified transaction, txn is a Transaction object returned from BeginTransaction()()(); if the operation is part of a Berkeley DB Concurrent Data Store group, txn is a handle returned from BeginCDSGroup()()(); otherwise null.

See Also