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IDbTransaction Interface

Represents a transaction to be performed at a data source, and is implemented by .NET Framework data providers that access relational databases.

Namespace:  System.Data
Assembly:  System.Data (in System.Data.dll)

'Declaration
Public Interface IDbTransaction _
	Inherits IDisposable

The IDbTransaction type exposes the following members.

  NameDescription
Public propertySupported by the XNA FrameworkConnectionSpecifies the Connection object to associate with the transaction.
Public propertySupported by the XNA FrameworkIsolationLevelSpecifies the IsolationLevel for this transaction.
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  NameDescription
Public methodSupported by the XNA FrameworkCommitCommits the database transaction.
Public methodSupported by the XNA FrameworkDisposePerforms application-defined tasks associated with freeing, releasing, or resetting unmanaged resources. (Inherited from IDisposable.)
Public methodSupported by the XNA FrameworkRollbackRolls back a transaction from a pending state.
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The IDbTransaction interface allows an inheriting class to implement a Transaction class, which represents the transaction to be performed at a data source. For more information about Transaction classes, see Transactions and Concurrency (ADO.NET).

An application does not create an instance of the IDbTransaction interface directly, but creates an instance of a class that inherits IDbTransaction.

Classes that inherit IDbTransaction must implement the inherited members, and typically define additional members to add provider-specific functionality. For example, the IDbTransaction interface defines the Commit method. In turn, the OleDbTransaction class inherits this property, and also defines the Begin method.

Notes to Implementers

To promote consistency among .NET Framework data providers, name the inheriting class in the form Prv Transaction where Prv is the uniform prefix given to all classes in a specific .NET Framework data provider namespace. For example, Sql is the prefix of the SqlTransaction class in the System.Data.SqlClient namespace.

The following example creates instances of the derived classes, SqlConnection and SqlTransaction. It also demonstrates how to use the BeginTransaction, Commit, and Rollback methods.


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("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


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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