Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Open Method

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()

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.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Show:
© 2015 Microsoft