OdbcTransaction Sınıf

Tanım

Ad Alanı:

System.Data.Odbc

Bütünleştirilmiş Kod:

System.Data.Odbc.dll

Paket:

System.Data.Odbc v11.0.0-preview.4.26230.115

Kaynak:

OdbcTransaction.cs

Veri kaynağında yapılacak bir SQL işlemini temsil eder. Bu sınıf devralınamaz.

public ref class OdbcTransaction sealed : System::Data::Common::DbTransaction

public sealed class OdbcTransaction : System.Data.Common.DbTransaction

type OdbcTransaction = class
    inherit DbTransaction

Public NotInheritable Class OdbcTransaction
Inherits DbTransaction

Devralma

Object

DbTransaction

OdbcTransaction

Örnekler

Aşağıdaki örnek bir OdbcConnection ve OdbcTransactionoluşturur. Ayrıca , BeginTransactionve Commit yöntemlerinin Rollbacknasıl kullanılacağını da gösterir.

public static void ExecuteTransaction(string connectionString)
{
    using (OdbcConnection connection =
               new OdbcConnection(connectionString))
    {
        OdbcCommand command = new OdbcCommand();
        OdbcTransaction transaction = null;

        // Set the Connection to the new OdbcConnection.
        command.Connection = connection;

        // Open the connection and execute the transaction.
        try
        {
            connection.Open();

            // Start a local transaction
            transaction = connection.BeginTransaction();

            // Assign transaction object for a pending local transaction.
            command.Connection = connection;
            command.Transaction = transaction;

            // Execute the commands.
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')";
            command.ExecuteNonQuery();
            command.CommandText =
                "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')";
            command.ExecuteNonQuery();

            // Commit the transaction.
            transaction.Commit();
            Console.WriteLine("Both records are written to database.");
        }
        catch (Exception ex)
        {
            Console.WriteLine(ex.Message);
            try
            {
                // Attempt to roll back the transaction.
                transaction.Rollback();
            }
            catch
            {
                // Do nothing here; transaction is not active.
            }
        }
        // The connection is automatically closed when the
        // code exits the using block.
    }
}

Public Sub ExecuteTransaction(ByVal connectionString As String)

    Using connection As New OdbcConnection(connectionString)
        Dim command As New OdbcCommand()
        Dim transaction As OdbcTransaction

        ' Set the Connection to the new OdbcConnection.
        command.Connection = connection

        ' Open the connection and execute the transaction.
        Try
            connection.Open()

            ' Start a local transaction.
            transaction = connection.BeginTransaction()

            ' Assign transaction object for a pending local transaction.
            command.Connection = connection
            command.Transaction = transaction

            ' Execute the commands.
            command.CommandText = _
                "Insert into Region (RegionID, RegionDescription) VALUES (100, 'Description')"
            command.ExecuteNonQuery()
            command.CommandText = _
                "Insert into Region (RegionID, RegionDescription) VALUES (101, 'Description')"
            command.ExecuteNonQuery()

            ' Commit the transaction.
            transaction.Commit()
            Console.WriteLine("Both records are written to database.")

        Catch ex As Exception
            Console.WriteLine(ex.Message)
            ' Try to rollback the transaction
            Try
                transaction.Rollback()

            Catch
                ' Do nothing here; transaction is not active.
            End Try
        End Try
        ' The connection is automatically closed when the
        ' code exits the Using block.
    End Using
End Sub

Açıklamalar

Uygulama, nesne üzerinde OdbcTransaction çağrısı BeginTransaction yaparak bir OdbcConnection nesne oluşturur. İşlemle ilişkili sonraki tüm işlemler (örneğin, işlemi işleme veya durdurma) nesne üzerinde OdbcTransaction gerçekleştirilir.

Özellikler

Name	Description
Connection	OdbcConnection İşlemle ilişkili nesneyi veya null işlem artık geçerli değilse alır.
IsolationLevel	Bu işlem için öğesini IsolationLevel belirtir.

Yöntemler

Name	Description
Commit()	Veritabanı işlemini işler.
Rollback()	Bekleyen durumdan bir işlemi geri alır.

Ayrıca bkz.

• OdbcDataAdapter
• OdbcConnection
• İşlem Gerçekleştirme