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OleDbConnection.Open Method

Opens a database connection with the property settings specified by the ConnectionString.

Namespace:  System.Data.OleDb
Assembly:  System.Data (in System.Data.dll)

public override void Open()

Implements

IDbConnection.Open()
IDbConnection.Open()

ExceptionCondition
InvalidOperationException

The connection is already open.

OleDbException

A connection-level error occurred while opening the connection.

The OleDbConnection draws an open connection from the connection pool if one is available. Otherwise, it establishes a new connection to the data source. You can open more than one DataReader on a single OleDbConnection. If the OLEDB provider you use does not support more than one active DataReader on a single connection, the OLEDB provider implicitly opens an additional connection for each.

NoteNote:

If the OleDbConnection goes out of scope, it is not closed. Therefore, you must explicitly close the connection by calling Close or Dispose, or using the connection within a Using statement.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

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