Transaction.EnlistVolatile Metode

Definisi

Ruang nama:

System.Transactions

Rakitan:

netstandard.dll, System.Transactions.Local.dll

Mendaftarkan manajer sumber daya volatil untuk berpartisipasi dalam transaksi.

Overload

Nama	Deskripsi
EnlistVolatile(IEnlistmentNotification, EnlistmentOptions)	Mendaftarkan manajer sumber daya volatil yang mendukung penerapan dua fase untuk berpartisipasi dalam transaksi.
EnlistVolatile(ISinglePhaseNotification, EnlistmentOptions)	Mendaftarkan manajer sumber daya volatil yang mendukung pengoptimalan penerapan fase tunggal untuk berpartisipasi dalam transaksi.

Keterangan

Manajer sumber daya volatil tidak dapat memulihkan dari kegagalan untuk menyelesaikan transaksi di mana mereka berpartisipasi.

EnlistVolatile(IEnlistmentNotification, EnlistmentOptions)

Sumber:

Transaction.cs

Mendaftarkan manajer sumber daya volatil yang mendukung penerapan dua fase untuk berpartisipasi dalam transaksi.

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

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

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

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

Parameter

enlistmentNotification

IEnlistmentNotification

Objek yang mengimplementasikan IEnlistmentNotification antarmuka untuk menerima pemberitahuan penerapan dua fase.

enlistmentOptions

EnlistmentOptions

EnlistDuringPrepareRequired jika resource manager ingin melakukan pekerjaan tambahan selama fase persiapan.

Mengembalikan

Enlistment

Objek Enlistment yang menjelaskan pendaftaran.

Contoh

Contoh berikut menunjukkan implementasi IEnlistmentNotification antarmuka, serta mendaftarkan objek sebagai peserta dalam transaksi menggunakan EnlistVolatile metode .

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

Keterangan

Manajer sumber daya volatil tidak dapat memulihkan dari kegagalan untuk menyelesaikan transaksi di mana mereka berpartisipasi. Untuk mendapatkan pendaftaran tahan lama dalam transaksi, gunakan metode .EnlistDurable

Resource manager yang terdaftar untuk partisipasi dalam transaksi melalui metode ini menerima pemberitahuan penerapan dua fase yang sesuai dengan metode yang ditentukan pada IEnlistmentNotification antarmuka.

EnlistVolatile(ISinglePhaseNotification, EnlistmentOptions)

Sumber:

Transaction.cs

Mendaftarkan manajer sumber daya volatil yang mendukung pengoptimalan penerapan fase tunggal untuk berpartisipasi dalam transaksi.

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

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

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

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

Parameter

singlePhaseNotification

ISinglePhaseNotification

Objek yang mengimplementasikan ISinglePhaseNotification antarmuka yang harus dapat menerima penerapan fase tunggal dan pemberitahuan penerapan dua fase.

enlistmentOptions

EnlistmentOptions

EnlistDuringPrepareRequired jika resource manager ingin melakukan pekerjaan tambahan selama fase persiapan.

Mengembalikan

Enlistment

Objek Enlistment yang menjelaskan pendaftaran.

Keterangan

Manajer sumber daya volatil tidak dapat memulihkan dari kegagalan untuk menyelesaikan transaksi di mana mereka berpartisipasi. Untuk mendapatkan pendaftaran tahan lama dalam transaksi, gunakan metode .EnlistDurable

Anda harus mencatat bahwa bahkan ketika implementasi resource manager Anda mendaftar dengan metode ini, tidak dijamin bahwa ia menerima penerapan fase tunggal. Manajer transaksi masih dapat mengirim pemberitahuan penerapan dua fase sebagai gantinya.