Return an estimate of the proportion of keys that are less than,
            equal to, and greater than the specified key.
            
    Namespace: 
   BerkeleyDBAssembly: libdb_dotnet53 (in libdb_dotnet53.dll) Version: 5.3.21.0
Syntax
| C# | 
|---|
public KeyRange KeyRange( DatabaseEntry key, Transaction txn )  | 
| Visual Basic (Declaration) | 
|---|
Public Function KeyRange ( _ key As DatabaseEntry, _ txn As Transaction _ ) As KeyRange  | 
| Visual C++ | 
|---|
public: KeyRange^ KeyRange( DatabaseEntry^ key, Transaction^ txn )  | 
Parameters
- key
 - Type: BerkeleyDB..::.DatabaseEntry
The key to search for 
- 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.