Transaction.DependentClone(DependentCloneOption) Transaction.DependentClone(DependentCloneOption) Transaction.DependentClone(DependentCloneOption) Transaction.DependentClone(DependentCloneOption) Method

定義

トランザクションの依存する複製を作成します。Creates a dependent clone of the transaction.

public:
 System::Transactions::DependentTransaction ^ DependentClone(System::Transactions::DependentCloneOption option);
public System.Transactions.DependentTransaction DependentClone (System.Transactions.DependentCloneOption option);
member this.DependentClone : System.Transactions.DependentCloneOption -> System.Transactions.DependentTransaction
Public Function DependentClone (option As DependentCloneOption) As DependentTransaction

パラメーター

cloneOption
DependentCloneOption DependentCloneOption DependentCloneOption DependentCloneOption

作成する依存トランザクションの種類を制御する DependentCloneOptionA DependentCloneOption that controls what kind of dependent transaction to create.

戻り値

次の例では、依存トランザクションを作成する方法を示します。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();
}
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

注釈

依存トランザクションは、その結果が複製元のトランザクションの結果に依存するトランザクションです。A dependent transaction is a transaction whose outcome depends on the outcome of the transaction from which it was cloned.

パラメーター cloneoptionは、作成する依存トランザクションの種類を制御します。The cloneoption parameter controls what kind of dependent transaction to create. 依存トランザクションがでBlockCommitUntilComplete作成された場合、トランザクションがタイムアウトするまで、またCompleteはに対しDependentTransactionて呼び出されるまで、トランザクションのコミットプロセスはブロックされます。If a dependent transaction is created with BlockCommitUntilComplete, it blocks the commit process of the transaction until the transaction times out, or Complete is called on the DependentTransaction. がでRollbackIfNotComplete作成されている場合、が呼び出されるCommit DependentTransactionCompleteにが呼び出されると、トランザクションは自動的に中止されます。If it is created with RollbackIfNotComplete, it automatically aborts the transaction if Commit is called before Complete is called on the DependentTransaction.

適用対象

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