The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.
DependentCloneOption Enumeration
.NET Framework 3.0
Controls what kind of dependent transaction to create.
Namespace: System.Transactions
Assembly: System.Transactions (in system.transactions.dll)
Assembly: System.Transactions (in system.transactions.dll)
| Member name | Description | |
|---|---|---|
| BlockCommitUntilComplete | The dependent transaction blocks the commit process of the transaction until the parent transaction times out, or Complete is called. In this case, additional work can be done on the transaction and new enlistments can be created. | |
| RollbackIfNotComplete | The dependent transaction automatically aborts the transaction if Commit is called on the parent transaction before Complete is called. |
A dependent transaction can be obtained using the DependentClone method, with the DependentCloneOption parameter controlling what kind of dependent transaction to create. For more information on how this enumeration is used, see Manage Concurrency with DepedentTransaction.
The following example shows you how to create a dependent transaction.
static void Main(string[] args) { try { using (TransactionScope scope = new TransactionScope()) { // Perform transactional work here. //Queue work item ThreadPool.QueueUserWorkItem(new WaitCallback(WorkerThread), Transaction.Current.DependentClone(DependentCloneOption.BlockCommitUntilComplete)); //Display transaction information Console.WriteLine("Transaction information:"); Console.WriteLine("ID: {0}", Transaction.Current.TransactionInformation.LocalIdentifier); Console.WriteLine("status: {0}", Transaction.Current.TransactionInformation.Status); Console.WriteLine("isolationlevel: {0}", Transaction.Current.IsolationLevel); //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')) { //Call complete on the scope 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; } } private static void WorkerThread(object transaction) { //Create a DependentTransaction from the object passed to the WorkerThread DependentTransaction dTx = (DependentTransaction)transaction; //Sleep for 1 second to force the worker thread to delay Thread.Sleep(1000); //Pass the DependentTransaction to the scope, so that work done in the scope becomes part of the transaction passed to the worker thread using (TransactionScope ts = new TransactionScope(dTx)) { //Perform transactional work here. //Call complete on the transaction scope ts.Complete(); } //Call complete on the dependent transaction dTx.Complete(); }
Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.