IDbTransaction Interface
Assembly: System.Data (in system.data.dll)
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 Performing Transactions. For more information about implementing .NET Framework data providers, see Implementing a .NET Framework Data Provider.
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
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.