SqlCommand.Connection Property


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

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

Public Property Connection As SqlConnection

Property Value

Type: System.Data.SqlClient.SqlConnection

The connection to a data source. The default value is null.

Exception Condition

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

        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

.NET Framework
Available since 1.1
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