SqlTransaction.Commit Método

Definición

Confirma la transacción de base de datos.Commits the database transaction.

public:
 virtual void Commit();
public void Commit ();
abstract member Commit : unit -> unit
override this.Commit : unit -> unit
Public Sub Commit ()

Implementaciones

Excepciones

Error al intentar confirmar la transacción.An error occurred while trying to commit the transaction.

Ya se confirmó o revirtió la transacción.The transaction has already been committed or rolled back.

O bien-or-

Se ha interrumpido la conexión.The connection is broken.

Ejemplos

En el ejemplo siguiente se SqlConnection crea un SqlTransactiony un.The following example creates a SqlConnection and a SqlTransaction. También se muestra cómo usar los Commitmétodos, BeginTransactiony. RollbackIt also demonstrates how to use the Commit, BeginTransaction, and Rollback methods. La transacción se revierte en cualquier error.The transaction is rolled back on any error. Try/Catchel control de errores se utiliza para controlar los errores que se producen al intentar confirmar o revertir la transacción.Try/Catch error handling is used to handle any errors when attempting to commit or roll back the transaction.

private static void ExecuteSqlTransaction(string connectionString)
{
    using (SqlConnection connection = new SqlConnection(connectionString))
    {
        connection.Open();

        SqlCommand command = connection.CreateCommand();
        SqlTransaction transaction;

        // Start a local transaction.
        transaction = connection.BeginTransaction("SampleTransaction");

        // Must assign both transaction object and connection
        // to Command object for a pending local transaction
        command.Connection = connection;
        command.Transaction = transaction;

        try
        {
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')";
            command.ExecuteNonQuery();
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')";
            command.ExecuteNonQuery();

            // Attempt to commit the transaction.
            transaction.Commit();
            Console.WriteLine("Both records are written to database.");
        }
        catch (Exception ex)
        {
            Console.WriteLine("Commit Exception Type: {0}", ex.GetType());
            Console.WriteLine("  Message: {0}", ex.Message);

            // Attempt to roll back the transaction.
            try
            {
                transaction.Rollback();
            }
            catch (Exception ex2)
            {
                // This catch block will handle any errors that may have occurred
                // on the server that would cause the rollback to fail, such as
                // a closed connection.
                Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType());
                Console.WriteLine("  Message: {0}", ex2.Message);
            }
        }
    }
}
Private Sub ExecuteSqlTransaction(ByVal connectionString As String)
    Using connection As New SqlConnection(connectionString)
        connection.Open()

        Dim command As SqlCommand = connection.CreateCommand()
        Dim transaction As SqlTransaction

        ' Start a local transaction
        transaction = connection.BeginTransaction("SampleTransaction")

        ' Must assign both transaction object and connection
        ' to Command object for a pending local transaction.
        command.Connection = connection
        command.Transaction = transaction

        Try
            command.CommandText = _
              "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')"
            command.ExecuteNonQuery()
            command.CommandText = _
              "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')"

            command.ExecuteNonQuery()

            ' Attempt to commit the transaction.
            transaction.Commit()
            Console.WriteLine("Both records are written to database.")

        Catch ex As Exception
            Console.WriteLine("Commit Exception Type: {0}", ex.GetType())
            Console.WriteLine("  Message: {0}", ex.Message)

            ' Attempt to roll back the transaction.
            Try
                transaction.Rollback()

            Catch ex2 As Exception
                ' This catch block will handle any errors that may have occurred
                ' on the server that would cause the rollback to fail, such as
                ' a closed connection.
                Console.WriteLine("Rollback Exception Type: {0}", ex2.GetType())
                Console.WriteLine("  Message: {0}", ex2.Message)
            End Try
        End Try
    End Using
End Sub

Comentarios

El Commit método es equivalente a la instrucción COMMIT TRANSACTION de Transact-SQL.The Commit method is equivalent to the Transact-SQL COMMIT TRANSACTION statement. No se puede revertir una transacción una vez confirmada, ya que todas las modificaciones se han convertido en una parte permanente de la base de datos.You cannot roll back a transaction once it has been committed, because all modifications have become a permanent part of the database. Para obtener más información, vea commit Transaction (Transact-SQL) .For more information, see COMMIT TRANSACTION (Transact-SQL) .

Nota

Try/Catchel control de excepciones siempre debe usarse al confirmar o revertir SqlTransactionun.Try/Catch exception handling should always be used when committing or rolling back a SqlTransaction. Commit Y generansiInvalidOperationException se termina la conexión o si la transacción ya se ha revertido en el servidor. RollbackBoth Commit and Rollback generates an InvalidOperationException if the connection is terminated or if the transaction has already been rolled back on the server.

Para obtener más información sobre las transacciones de SQL Server, vea transacciones (Transact-SQL).For more information on SQL Server transactions, see Transactions (Transact-SQL).

Se aplica a

Consulte también: