SqlTransaction.Commit Méthode

Définition

Valide la transaction de base de données.

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

Implémente

Exceptions

Une erreur s’est produite lors de la tentative de validation de la transaction.

La transaction a déjà été validée ou annulée.

  • ou -

La connexion est interrompue.

Exemples

L’exemple suivant crée un SqlConnection et un SqlTransaction . Il montre également comment utiliser les Commit méthodes, BeginTransaction et Rollback . La transaction est restaurée en cas d’erreur. Try/Catch la gestion des erreurs permet de gérer les erreurs lors de la tentative de validation ou de restauration de la 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

Remarques

la Commit méthode est équivalente à l’instruction Transact-SQL COMMIT TRANSACTION. Vous ne pouvez pas restaurer une transaction une fois qu’elle a été validée, car toutes les modifications deviennent une partie permanente de la base de données. Pour plus d’informations, consultez Commit Transaction (Transact-SQL) .

Notes

Try/Catch la gestion des exceptions doit toujours être utilisée lors de la validation ou de la restauration d’un SqlTransaction . CommitEt Rollback génère un InvalidOperationException si la connexion est terminée ou si la transaction a déjà été restaurée sur le serveur.

pour plus d’informations sur les transactions SQL Server, consultez transactions (Transact-SQL).

S’applique à

Voir aussi