[This topic is pre-release documentation and is subject to change in future releases. Blank topics are included as placeholders.]

opens an ObjectContainer on the specified database file for local use.

A database file can only be opened once, subsequent attempts to open another ObjectContainer against the same file will result in a DatabaseFileLockedException .

Database files can only be accessed for readwrite access from one process (one Java VM) at one time. All versions except for db4o mobile edition use an internal mechanism to lock the database file for other processes.

Namespace: Db4objects.Db4o
Assembly:   Db4objects.Db4o (in Db4objects.Db4o.dll)

Syntax

Visual Basic (Declaration)
Public Shared Function OpenFile ( _
	config As IConfiguration, _
	databaseFileName As String _
) As IObjectContainer
C#
public static IObjectContainer OpenFile (
	IConfiguration config,
	string databaseFileName
)
Visual C++
public:
static IObjectContainer^ OpenFile (
	IConfiguration^ config, 
	String^ databaseFileName
)

Parameters

config
Db4objects.Db4o.Config.IConfiguration
a custom Configuration instance to be obtained via Db4objects.Db4o.Db4oFactory.NewConfiguration
databaseFileName
System.String
an absolute or relative path to the database file

Return Value

an open ObjectContainer

See Also