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SqlCommand.Connection Property

Gets or sets the SqlConnection used by this instance of the SqlCommand.

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

'Declaration
Public Property Connection As SqlConnection
'Usage
Dim instance As SqlCommand 
Dim value As SqlConnection 

value = instance.Connection

instance.Connection = value

Property Value

Type: System.Data.SqlClient.SqlConnection
The connection to a data source. The default value is Nothing.

ExceptionCondition
InvalidOperationException

The Connection property was changed while the command was enlisted in a transaction..

If the command is enlisted in an existing transaction, and the connection is changed, trying to execute the command will throw an InvalidOperationException.

If the Transaction property is not null and the transaction has already been committed or rolled back, Transaction is set to null.

The following example creates a SqlCommand and sets some of its properties.

Public Sub CreateCommand(ByVal queryString As String, _
  ByVal connectionString As String)
    Using connection As New SqlConnection(connectionString)
        Dim command As New SqlCommand()
        command.Connection = connection
        command.CommandTimeout = 15
        command.CommandType = CommandType.Text
        command.CommandText = queryString

        connection.Open()
        Dim reader As SqlDataReader = command.ExecuteReader()
            While reader.Read()
            Console.WriteLine(String.Format("{0}, {1}", _
                reader(0), reader(1)))
        End While 
    End Using 
End Sub

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, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

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

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0
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