Transaction.EnlistVolatile Méthode

public:
 System::Transactions::Enlistment ^ EnlistVolatile(System::Transactions::IEnlistmentNotification ^ enlistmentNotification, System::Transactions::EnlistmentOptions enlistmentOptions);

public:
 System::Transactions::Enlistment ^ EnlistVolatile(System::Transactions::IEnlistmentNotification ^ notification, System::Transactions::EnlistmentOptions options);

public System.Transactions.Enlistment EnlistVolatile (System.Transactions.IEnlistmentNotification enlistmentNotification, System.Transactions.EnlistmentOptions enlistmentOptions);

public System.Transactions.Enlistment EnlistVolatile (System.Transactions.IEnlistmentNotification notification, System.Transactions.EnlistmentOptions options);

member this.EnlistVolatile : System.Transactions.IEnlistmentNotification * System.Transactions.EnlistmentOptions -> System.Transactions.Enlistment

member this.EnlistVolatile : System.Transactions.IEnlistmentNotification * System.Transactions.EnlistmentOptions -> System.Transactions.Enlistment

Public Function EnlistVolatile (enlistmentNotification As IEnlistmentNotification, enlistmentOptions As EnlistmentOptions) As Enlistment

Public Function EnlistVolatile (notification As IEnlistmentNotification, options As EnlistmentOptions) As Enlistment

Paramètres

Retours

Enlistment

Un objet Enlistment qui décrit l'inscription.

Exemples

L’exemple suivant montre une implémentation de l’interface, ainsi que l’inscription de IEnlistmentNotification l’objet en tant que participant à une transaction à l’aide de la EnlistVolatile méthode.

static void Main(string[] args)
{
    try
    {
        using (TransactionScope scope = new TransactionScope())
        {
        
            //Create an enlistment object
            myEnlistmentClass myElistment = new myEnlistmentClass();

            //Enlist on the current transaction with the enlistment object
            Transaction.Current.EnlistVolatile(myElistment, EnlistmentOptions.None);

            //Perform transactional work here.

            //Call complete on the TransactionScope based on console input
                            ConsoleKeyInfo c;
            while(true)
                            {
                Console.Write("Complete the transaction scope? [Y|N] ");
                c = Console.ReadKey();
                Console.WriteLine();
        
                                    if ((c.KeyChar == 'Y') || (c.KeyChar == 'y'))
                {
                    scope.Complete();
                    break;
                }
                else if ((c.KeyChar == 'N') || (c.KeyChar == 'n'))
                {
                    break;
                }
            }
        }
    }
    catch (System.Transactions.TransactionException ex)
    {
        Console.WriteLine(ex);
    }
    catch
    {
        Console.WriteLine("Cannot complete transaction");
        throw;
    }
}

class myEnlistmentClass : IEnlistmentNotification
{
    public void Prepare(PreparingEnlistment preparingEnlistment)
    {
        Console.WriteLine("Prepare notification received");

        //Perform transactional work

        //If work finished correctly, reply prepared
        preparingEnlistment.Prepared();

        // otherwise, do a ForceRollback
        preparingEnlistment.ForceRollback();
    }

    public void Commit(Enlistment enlistment)
    {
        Console.WriteLine("Commit notification received");

        //Do any work necessary when commit notification is received

        //Declare done on the enlistment
        enlistment.Done();
    }

    public void Rollback(Enlistment enlistment)
    {
        Console.WriteLine("Rollback notification received");

        //Do any work necessary when rollback notification is received

        //Declare done on the enlistment
        enlistment.Done();
    }

    public void InDoubt(Enlistment enlistment)
    {
        Console.WriteLine("In doubt notification received");

        //Do any work necessary when indout notification is received
        
        //Declare done on the enlistment
        enlistment.Done();
    }
}

    Public Shared Sub Main()
        Try
            Using scope As TransactionScope = New TransactionScope()

                'Create an enlistment object
                Dim myEnlistmentClass As New EnlistmentClass

                'Enlist on the current transaction with the enlistment object
                Transaction.Current.EnlistVolatile(myEnlistmentClass, EnlistmentOptions.None)

                'Perform transactional work here.

                'Call complete on the TransactionScope based on console input
                Dim c As ConsoleKeyInfo
                While (True)
                    Console.Write("Complete the transaction scope? [Y|N] ")
                    c = Console.ReadKey()
                    Console.WriteLine()
                    If (c.KeyChar = "Y") Or (c.KeyChar = "y") Then
                        scope.Complete()
                        Exit While
                    ElseIf ((c.KeyChar = "N") Or (c.KeyChar = "n")) Then
                        Exit While
                    End If
                End While
            End Using
        Catch ex As TransactionException
            Console.WriteLine(ex)
        Catch
            Console.WriteLine("Cannot complete transaction")
            Throw
        End Try
    End Sub
End Class

Public Class EnlistmentClass
    Implements IEnlistmentNotification

    Public Sub Prepare(ByVal myPreparingEnlistment As PreparingEnlistment) Implements System.Transactions.IEnlistmentNotification.Prepare
        Console.WriteLine("Prepare notification received")

        'Perform transactional work

        'If work finished correctly, reply with prepared
        myPreparingEnlistment.Prepared()
    End Sub

    Public Sub Commit(ByVal myEnlistment As Enlistment) Implements System.Transactions.IEnlistmentNotification.Commit
        Console.WriteLine("Commit notification received")

        'Do any work necessary when commit notification is received

        'Declare done on the enlistment
        myEnlistment.Done()
    End Sub

    Public Sub Rollback(ByVal myEnlistment As Enlistment) Implements System.Transactions.IEnlistmentNotification.Rollback
        Console.WriteLine("Rollback notification received")

        'Do any work necessary when rollback notification is received

        'Declare done on the enlistment
        myEnlistment.Done()
    End Sub

    Public Sub InDoubt(ByVal myEnlistment As Enlistment) Implements System.Transactions.IEnlistmentNotification.InDoubt
        Console.WriteLine("In doubt notification received")

        'Do any work necessary when indout notification is received

        'Declare done on the enlistment
        myEnlistment.Done()
    End Sub
End Class

Remarques

Les gestionnaires de ressources volatiles ne peuvent pas récupérer en cas d’échec de la réalisation d’une transaction dans laquelle ils participaient. Pour obtenir une inscription durable dans une transaction, utilisez la EnlistDurable méthode.

Les gestionnaires de ressources inscrits pour participer à une transaction par le biais de cette méthode reçoivent des notifications de validation en deux phases qui correspondent aux méthodes définies sur l’interface IEnlistmentNotification .

public:
 System::Transactions::Enlistment ^ EnlistVolatile(System::Transactions::ISinglePhaseNotification ^ singlePhaseNotification, System::Transactions::EnlistmentOptions enlistmentOptions);

public:
 System::Transactions::Enlistment ^ EnlistVolatile(System::Transactions::ISinglePhaseNotification ^ notification, System::Transactions::EnlistmentOptions options);

public System.Transactions.Enlistment EnlistVolatile (System.Transactions.ISinglePhaseNotification singlePhaseNotification, System.Transactions.EnlistmentOptions enlistmentOptions);

public System.Transactions.Enlistment EnlistVolatile (System.Transactions.ISinglePhaseNotification notification, System.Transactions.EnlistmentOptions options);

member this.EnlistVolatile : System.Transactions.ISinglePhaseNotification * System.Transactions.EnlistmentOptions -> System.Transactions.Enlistment

member this.EnlistVolatile : System.Transactions.ISinglePhaseNotification * System.Transactions.EnlistmentOptions -> System.Transactions.Enlistment

Public Function EnlistVolatile (singlePhaseNotification As ISinglePhaseNotification, enlistmentOptions As EnlistmentOptions) As Enlistment

Public Function EnlistVolatile (notification As ISinglePhaseNotification, options As EnlistmentOptions) As Enlistment

Paramètres

Retours

Enlistment

Un objet Enlistment qui décrit l'inscription.

Remarques

Les gestionnaires de ressources volatiles ne peuvent pas se récupérer de l’échec de la réalisation d’une transaction dans laquelle ils participaient. Pour obtenir une inscription durable dans une transaction, utilisez la EnlistDurable méthode. Pour plus d’informations sur les ressources volatiles et durables, ainsi que sur la façon d’inscrire une ressource, consultez Implémentation d’un Resource Manager. Pour plus d’informations sur la façon dont un gestionnaire de ressources répond à la notification de validation et prépare la validation, consultez Commiting A Transaction In Single-Phase and Multi-Phase.

Vous devez noter que même lorsque votre implémentation resource manager s’inscrit avec cette méthode, elle n’est pas garantie qu’elle reçoit une validation de phase unique. Le gestionnaire de transactions peut toujours envoyer deux notifications de validation de phase à la place. Pour plus d’informations sur l’optimisation de la validation de phase unique, consultez Optimisation à l’aide de la validation de phase unique et de la notification de phase unique promotable.

Voir aussi

• Implémentation d'un gestionnaire des ressources