Transaction.TransactionCompleted Événement

Définition

Indique que la transaction est terminée.Indicates that the transaction is completed.

public:
 event System::Transactions::TransactionCompletedEventHandler ^ TransactionCompleted;
public event System.Transactions.TransactionCompletedEventHandler TransactionCompleted;
member this.TransactionCompleted : System.Transactions.TransactionCompletedEventHandler 
Public Custom Event TransactionCompleted As TransactionCompletedEventHandler 

Exceptions

Tentative de s'abonner à cet événement sur une transaction qui a été supprimée.An attempt to subscribe this event on a transaction that has been disposed.

Exemples

L’exemple suivant montre comment une application peut obtenir le résultat d’une transaction en s’abonnant à TransactionCompleted l’événement.The following sample shows how an application can obtain the outcome of a transaction by subscribing to the TransactionCompleted event.

static void Main(string[] args)
{
    try
    {
        //Create the transaction scope
        using (TransactionScope scope = new TransactionScope())
        {
            //Register for the transaction completed event for the current transaction
            Transaction.Current.TransactionCompleted += new TransactionCompletedEventHandler(Current_TransactionCompleted);

            //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;
    }
}

//Transaction completed event handler
static void Current_TransactionCompleted(object sender, TransactionEventArgs e)
{
    Console.WriteLine("A transaction has completed:");
    Console.WriteLine("ID:             {0}", e.Transaction.TransactionInformation.LocalIdentifier);
    Console.WriteLine("Distributed ID: {0}", e.Transaction.TransactionInformation.DistributedIdentifier);
    Console.WriteLine("Status:         {0}", e.Transaction.TransactionInformation.Status);
    Console.WriteLine("IsolationLevel: {0}", e.Transaction.IsolationLevel);
}
Public Shared Sub Main()
    Try
        Using scope As TransactionScope = New TransactionScope()

            'Register for the transaction completed event for the current transaction
            AddHandler Transaction.Current.TransactionCompleted, AddressOf Current_TransactionCompleted

            '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

'Transaction completed event handler
Private Shared Sub Current_TransactionCompleted(ByVal sender As Object, ByVal e As TransactionEventArgs)
    Console.WriteLine("A transaction has completed:")
    Console.WriteLine("ID:             {0}", e.Transaction.TransactionInformation.LocalIdentifier)
    Console.WriteLine("Distributed ID: {0}", e.Transaction.TransactionInformation.DistributedIdentifier)
    Console.WriteLine("Status:         {0}", e.Transaction.TransactionInformation.Status)
    Console.WriteLine("IsolationLevel: {0}", e.Transaction.IsolationLevel)
End Sub

Remarques

Vous pouvez vous inscrire à cet événement au lieu d’utiliser une inscription volatile pour obtenir des informations sur les résultats des transactions.You can register for this event instead of using a volatile enlistment to get outcome information for transactions. Le paramètre passé au TransactionCompletedEventHandler délégué est une Transaction instance.The parameter passed to the TransactionCompletedEventHandler delegate is a Transaction instance. Vous pouvez ensuite interroger TransactionInformation la propriété de l’instance spécifique pour obtenir une instance TransactionInformationde, Status dont la propriété contient l’état d’une transaction avec Committed la Aborted valeur ou.You can then query the TransactionInformation property of the specific instance to get an instance of TransactionInformation, whose Status property contains the status of a transaction with either the Committed or Aborted value.

Attention L’inscription à cet événement affecte négativement les performances de la transaction à laquelle il est attaché.Caution Signing up for this event negatively affects the performance of the transaction it is attached to.

S’applique à