SqlCommand.Connection SqlCommand.Connection SqlCommand.Connection SqlCommand.Connection Property

Definición

Obtiene o establece la interfaz SqlConnection que usa esta instancia de SqlCommand.Gets or sets the SqlConnection used by this instance of the SqlCommand.

public:
 property System::Data::SqlClient::SqlConnection ^ Connection { System::Data::SqlClient::SqlConnection ^ get(); void set(System::Data::SqlClient::SqlConnection ^ value); };
[System.Data.DataSysDescription("DbCommand_Connection")]
public System.Data.SqlClient.SqlConnection Connection { get; set; }
member this.Connection : System.Data.SqlClient.SqlConnection with get, set
Public Property Connection As SqlConnection

Valor de propiedad

Conexión a un origen de datos.The connection to a data source. El valor predeterminado es null.The default value is null.

Excepciones

La propiedad Connection ha cambiado mientras el comando se inscribía en una transacción.The Connection property was changed while the command was enlisted in a transaction.

Ejemplos

En el ejemplo siguiente se SqlCommand crea un y se establecen algunas de sus propiedades.The following example creates a SqlCommand and sets some of its properties.

private static void CreateCommand(string queryString,
    string connectionString)
{
    using (SqlConnection connection = new SqlConnection(
               connectionString))
    {
        SqlCommand command = new SqlCommand();
        command.Connection = connection;
        command.CommandTimeout = 15;
        command.CommandType = CommandType.Text;
        command.CommandText = queryString;

        connection.Open();
        SqlDataReader reader = command.ExecuteReader();
        while (reader.Read())
        {
            Console.WriteLine(String.Format("{0}, {1}",
                reader[0], reader[1]));
        }
    }
}
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

Comentarios

Si el comando está dado de alta en una transacción existente y se cambia la conexión, al intentar ejecutar el comando se producirá una InvalidOperationExceptionexcepción.If the command is enlisted in an existing transaction, and the connection is changed, trying to execute the command will throw an InvalidOperationException.

Si el valor de la propiedad Transaction no es null y la transacción ya se ha confirmado o revertido, el valor de la propiedad Transaction se establece en null.If the Transaction property is not null and the transaction has already been committed or rolled back, Transaction is set to null.

Se aplica a

Consulte también: