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SqlConnection.ChangeDatabase Method

Changes the current database for an open SqlConnection.

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

'Declaration
Public Overrides Sub ChangeDatabase ( _
	database As String _
)

Parameters

database
Type: System.String
The name of the database to use instead of the current database.

Implements

IDbConnection.ChangeDatabase(String)

ExceptionCondition
ArgumentException

The database name is not valid.

InvalidOperationException

The connection is not open.

SqlException

Cannot change the database.

The value supplied in the database parameter must be a valid database name. The database parameter cannot contain a null value, an empty string, or a string with only blank characters.

When you are using connection pooling against SQL Server 2000, and you close the connection, it is returned to the connection pool. The next time the connection is retrieved from the pool used, the reset connection request piggybacks on the first round trip to the server and executes before the user performs any operations. From the time that you return a connection to the connection pool after calling the ChangeDatabase method, until the time the connection is retrieved, the connection remains active on the database. This prevents you from dropping the database because the connection is still active.

The following example creates a SqlConnection and displays some of its read-only properties.


Private Sub ChangeSqlDatabase(ByVal connectionString As String)
    ' Assumes connectionString represents a valid connection string
    ' to the AdventureWorks sample database.
    Using connection As New SqlConnection(connectionString)

        connection.Open()
        Console.WriteLine("ServerVersion: {0}", connection.ServerVersion)
        Console.WriteLine("Database: {0}", connection.Database)

        connection.ChangeDatabase("Northwind")
        Console.WriteLine("Database: {0}", connection.Database)
    End Using
End Sub


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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