SqlTransaction.Rollback Metode

Definisi

Ruang nama:

System.Data.SqlClient

Rakitan:

System.Data.dll

Mengembalikan transaksi dari status tertunda.

Overload

Rollback()	Mengembalikan transaksi dari status tertunda.
Rollback(String)	Mengembalikan transaksi dari status tertunda, dan menentukan nama transaksi atau titik simpan.

Rollback()

Mengembalikan transaksi dari status tertunda.

public:
 override void Rollback();

public override void Rollback ();

override this.Rollback : unit -> unit

Public Overrides Sub Rollback ()

Pengecualian

Exception

Terjadi kesalahan saat mencoba melakukan transaksi.

InvalidOperationException

Transaksi telah dilakukan atau digulung balik.

-atau-

Koneksi terputus.

Contoh

Contoh berikut membuat SqlConnection dan SqlTransaction. Ini juga menunjukkan cara menggunakan BeginTransactionmetode , , Commitdan Rollback . Transaksi digulung balik pada kesalahan apa pun. Try / Catch penanganan kesalahan digunakan untuk menangani kesalahan apa pun saat mencoba menerapkan atau mengembalikan transaksi.

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();

        // 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()

        ' 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

Keterangan

Metode Rollback ini setara dengan pernyataan TRANSAKSI ROLLBACK Transact-SQL. Untuk informasi selengkapnya, lihat ROLLBACK TRANSACTION (Transact-SQL) .

Transaksi hanya dapat digulung balik dari status tertunda (setelah BeginTransaction dipanggil, tetapi sebelumnya Commit dipanggil). Transaksi digulung balik jika dibuang sebelum Commit atau Rollback dipanggil.

Catatan

Try / Catch penanganan pengecualian harus selalu digunakan saat mengembalikan transaksi. Rollback menghasilkan InvalidOperationException jika koneksi dihentikan atau jika transaksi telah digulung balik di server.

Untuk informasi selengkapnya tentang transaksi SQL Server, lihat Transaksi (Transact-SQL).

Lihat juga

• Transaksi Lokal
• Ringkasan ADO.NET

Rollback(String)

Mengembalikan transaksi dari status tertunda, dan menentukan nama transaksi atau titik simpan.

public:
 void Rollback(System::String ^ transactionName);

public void Rollback (string transactionName);

override this.Rollback : string -> unit

Public Sub Rollback (transactionName As String)

Parameter

transactionName

String

Nama transaksi yang akan digulung balik, atau titik penyimpanan yang akan digulung balik.

Pengecualian

ArgumentException

Tidak ada nama transaksi yang ditentukan.

InvalidOperationException

Transaksi telah dilakukan atau digulung balik.

-atau-

Koneksi terputus.

Contoh

Contoh berikut membuat SqlConnection dan SqlTransaction. Ini juga menunjukkan cara menggunakan BeginTransactionmetode , , Commitdan Rollback . Transaksi digulung balik pada kesalahan apa pun. Try / Catch penanganan kesalahan digunakan untuk menangani kesalahan apa pun saat mencoba menerapkan atau mengembalikan transaksi.

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("SampleTransaction");
            }
            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("Exception Type: {0}", ex.GetType())
            Console.WriteLine("  Message: {0}", ex.Message)

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

            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

Keterangan

Metode Rollback ini setara dengan pernyataan TRANSAKSI ROLLBACK Transact-SQL. Untuk informasi selengkapnya, lihat Transaksi (Transact-SQL).

Transaksi hanya dapat digulung balik dari status tertunda (setelah BeginTransaction dipanggil, tetapi sebelumnya Commit dipanggil). Transaksi digulung balik jika dibuang sebelum Commit atau Rollback dipanggil.

Catatan

Try / Catch penanganan pengecualian harus selalu digunakan saat mengembalikan transaksi. Rollback menghasilkan InvalidOperationException jika koneksi dihentikan atau jika transaksi telah digulung balik di server.

Untuk informasi selengkapnya tentang transaksi SQL Server, lihat Transaksi (Transact-SQL).

Lihat juga

• Melakukan Transaksi
• Ringkasan ADO.NET