DependentCloneOption 列挙体
アセンブリ: System.Transactions (system.transactions.dll 内)
構文
Public Enumeration DependentCloneOption
メンバ名 | 説明 | |
---|---|---|
BlockCommitUntilComplete | 依存トランザクションは、親トランザクションがタイムアウトするか、Complete が呼び出されるまで、トランザクションのコミット プロセスをブロックします。この場合、トランザクションで追加作業を行ったり、新しい参加リストを作成したりできます。 | |
RollbackIfNotComplete | 親トランザクションで Complete が呼び出される前に Commit が呼び出されると、依存トランザクションは自動的にトランザクションを中止します。 |
依存トランザクションは、DependentClone メソッドを使用して取得できます。DependentCloneOption パラメータで、作成する依存トランザクションの種類を制御します。この列挙体の使用方法の詳細については、「DependentTransaction を使用した同時実行管理」を参照してください。
Public Shared Sub Main() Try Using scope As TransactionScope = New TransactionScope() 'Perform transactional work here. 'Queue work item ThreadPool.QueueUserWorkItem(AddressOf 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 Dim c As ConsoleKeyInfo While (True) Console.Write("Complete the transaction scope? [Y|N] ") c = Console.ReadKey() Console.WriteLine() If (c.KeyChar = "Y") Or (c.KeyChar = "y") Then scope.Complete() Exit While ElseIf ((c.KeyChar = "N") Or (c.KeyChar = "n")) Then Exit While End If End While End Using Catch ex As TransactionException Console.WriteLine(ex) Catch Console.WriteLine("Cannot complete transaction") Throw End Try End Sub Public Shared Sub WorkerThread(ByVal myTransaction As Object) 'Create a DependentTransaction from the object passed to the WorkerThread Dim dTx As DependentTransaction dTx = CType(myTransaction, DependentTransaction) '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 ts As TransactionScope = New TransactionScope(dTx) 'Perform transactional work here. 'Call complete on the transaction scope ts.Complete() End Using 'Call complete on the dependent transaction dTx.Complete() End Sub
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 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
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。
参照
- DependentCloneOption 列挙体のページへのリンク