TransactionScope TransactionScope TransactionScope TransactionScope Class

Tanım

Bir kod bloğu işlem yapar. Makes a code block transactional. Bu sınıf devralınamaz. This class cannot be inherited.

public ref class TransactionScope sealed : IDisposable
public sealed class TransactionScope : IDisposable
type TransactionScope = class
    interface IDisposable
Public NotInheritable Class TransactionScope
Implements IDisposable
Devralma
TransactionScopeTransactionScopeTransactionScopeTransactionScope
Uygulamalar

Örnekler

Aşağıdaki örnek nasıl kullanılacağını gösterir TransactionScope bir işlemde bir kod bloğunu tanımlanacağı sınıf.The following example demonstrates how to use the TransactionScope class to define a block of code to participate in a transaction.

// This function takes arguments for 2 connection strings and commands to create a transaction 
// involving two SQL Servers. It returns a value > 0 if the transaction is committed, 0 if the 
// transaction is rolled back. To test this code, you can connect to two different databases 
// on the same server by altering the connection string, or to another 3rd party RDBMS by 
// altering the code in the connection2 code block.
static public int CreateTransactionScope(
    string connectString1, string connectString2,
    string commandText1, string commandText2)
{
    // Initialize the return value to zero and create a StringWriter to display results.
    int returnValue = 0;
    System.IO.StringWriter writer = new System.IO.StringWriter();

    try
    {
        // Create the TransactionScope to execute the commands, guaranteeing
        // that both commands can commit or roll back as a single unit of work.
        using (TransactionScope scope = new TransactionScope())
        {
            using (SqlConnection connection1 = new SqlConnection(connectString1))
            {
                // Opening the connection automatically enlists it in the 
                // TransactionScope as a lightweight transaction.
                connection1.Open();

                // Create the SqlCommand object and execute the first command.
                SqlCommand command1 = new SqlCommand(commandText1, connection1);
                returnValue = command1.ExecuteNonQuery();
                writer.WriteLine("Rows to be affected by command1: {0}", returnValue);

                // If you get here, this means that command1 succeeded. By nesting
                // the using block for connection2 inside that of connection1, you
                // conserve server and network resources as connection2 is opened
                // only when there is a chance that the transaction can commit.   
                using (SqlConnection connection2 = new SqlConnection(connectString2))
                {
                    // The transaction is escalated to a full distributed
                    // transaction when connection2 is opened.
                    connection2.Open();

                    // Execute the second command in the second database.
                    returnValue = 0;
                    SqlCommand command2 = new SqlCommand(commandText2, connection2);
                    returnValue = command2.ExecuteNonQuery();
                    writer.WriteLine("Rows to be affected by command2: {0}", returnValue);
                }
            }

            // The Complete method commits the transaction. If an exception has been thrown,
            // Complete is not  called and the transaction is rolled back.
            scope.Complete();

        }
       
    }
    catch (TransactionAbortedException ex)
    {
        writer.WriteLine("TransactionAbortedException Message: {0}", ex.Message);
    }
    catch (ApplicationException ex)
    {
        writer.WriteLine("ApplicationException Message: {0}", ex.Message);
    }

    // Display messages.
    Console.WriteLine(writer.ToString());

    return returnValue;
}
'  This function takes arguments for 2 connection strings and commands to create a transaction 
'  involving two SQL Servers. It returns a value > 0 if the transaction is committed, 0 if the 
'  transaction is rolled back. To test this code, you can connect to two different databases 
'  on the same server by altering the connection string, or to another 3rd party RDBMS  
'  by altering the code in the connection2 code block.
Public Function CreateTransactionScope( _
  ByVal connectString1 As String, ByVal connectString2 As String, _
  ByVal commandText1 As String, ByVal commandText2 As String) As Integer

    ' Initialize the return value to zero and create a StringWriter to display results.
    Dim returnValue As Integer = 0
    Dim writer As System.IO.StringWriter = New System.IO.StringWriter

    Try
    ' Create the TransactionScope to execute the commands, guaranteeing
    '  that both commands can commit or roll back as a single unit of work.
        Using scope As New TransactionScope()
            Using connection1 As New SqlConnection(connectString1)
                ' Opening the connection automatically enlists it in the 
                ' TransactionScope as a lightweight transaction.
                connection1.Open()

                ' Create the SqlCommand object and execute the first command.
                Dim command1 As SqlCommand = New SqlCommand(commandText1, connection1)
                returnValue = command1.ExecuteNonQuery()
                writer.WriteLine("Rows to be affected by command1: {0}", returnValue)

                ' If you get here, this means that command1 succeeded. By nesting
                ' the using block for connection2 inside that of connection1, you
                ' conserve server and network resources as connection2 is opened
                ' only when there is a chance that the transaction can commit.   
                Using connection2 As New SqlConnection(connectString2)
                    ' The transaction is escalated to a full distributed
                    ' transaction when connection2 is opened.
                    connection2.Open()

                    ' Execute the second command in the second database.
                    returnValue = 0
                    Dim command2 As SqlCommand = New SqlCommand(commandText2, connection2)
                    returnValue = command2.ExecuteNonQuery()
                    writer.WriteLine("Rows to be affected by command2: {0}", returnValue)
                End Using
            End Using

        ' The Complete method commits the transaction. If an exception has been thrown,
        ' Complete is called and the transaction is rolled back.
        scope.Complete()
        End Using
    Catch ex As TransactionAbortedException
        writer.WriteLine("TransactionAbortedException Message: {0}", ex.Message)
    Catch ex As ApplicationException
        writer.WriteLine("ApplicationException Message: {0}", ex.Message)
    End Try

    ' Display messages.
    Console.WriteLine(writer.ToString())

    Return returnValue
End Function

Açıklamalar

System.Transactions Altyapı temel hem bir açık bir programlama modeli sağlar Transaction sınıfı, aynı zamanda örtük bir programlama modeli kullanarak TransactionScope içinde işlemleri otomatik olarak yönetilir altyapısı tarafından sınıfı.The System.Transactions infrastructure provides both an explicit programming model based on the Transaction class, as well as an implicit programming model using the TransactionScope class, in which transactions are automatically managed by the infrastructure.

Önemli

Kullanarak örtük işlemleri oluşturma öneririz TransactionScope sınıfı, böylece ortam işlem bağlamı otomatik olarak sizin için yönetilir.We recommend that you create implicit transactions using the TransactionScope class, so that the ambient transaction context is automatically managed for you. Ayrıca kullanmalısınız TransactionScope ve DependentTransaction sınıfı birden fazla işlev çağrıları veya birden çok iş parçacığı çağrı aynı işlem kullanımı gerektiren uygulamalar için.You should also use the TransactionScope and DependentTransaction class for applications that require the use of the same transaction across multiple function calls or multiple thread calls. Bu model hakkında daha fazla bilgi için bkz. uygulayan bir örtük işlem kullanarak işlem kapsamı konu.For more information on this model, see the Implementing An Implicit Transaction Using Transaction Scope topic. Bir işlem uygulama yazma ile ilgili daha fazla bilgi için bkz: bir işlem uygulama yazma.For more information on writing a transactional application, see Writing A Transactional Application.

Örnekleme sırasında bir TransactionScope tarafından new deyimi, hareket yöneticisi katılmak için hangi işlem belirler.Upon instantiating a TransactionScope by the new statement, the transaction manager determines which transaction to participate in. Belirlenen sonra kapsam her zaman bu harekete katılan.Once determined, the scope always participates in that transaction. Karar iki etkene dayanır: bir ortam işlem mevcut olup olmadığını ve değerini TransactionScopeOption oluşturucuda parametresi.The decision is based on two factors: whether an ambient transaction is present and the value of the TransactionScopeOption parameter in the constructor. Ortam işlem içinde kodunuzu yürütür işlem bir işlemdir.The ambient transaction is the transaction your code executes in. Statik çağırarak bir başvuru ortam işlem edinebilirsiniz Transaction.Current özelliği Transaction sınıfı.You can obtain a reference to the ambient transaction by calling the static Transaction.Current property of the Transaction class. Bu parametre nasıl kullanıldığı hakkında daha fazla bilgi için "İşlem akış yönetimi" bölümüne bakın. uygulayan bir örtük işlem kullanarak işlem kapsamı konu.For more information on how this parameter is used, see the "Transaction Flow Management" section of the Implementing An Implicit Transaction Using Transaction Scope topic.

Hiçbir özel işlem kapsamı içinde oluşursa (diğer bir deyişle, başlatma arasında TransactionScope nesne ve arama, kendi Dispose yöntemi), ardından, kapsamı katıldığı işlemin devam etmesine izin verilir.If no exception occurs within the transaction scope (that is, between the initialization of the TransactionScope object and the calling of its Dispose method), then the transaction in which the scope participates is allowed to proceed. İşlem kapsamı içinde bir özel durum oluşursa, hangi katıldığı işlem geri alınacaktır.If an exception does occur within the transaction scope, the transaction in which it participates will be rolled back.

Uygulamanızı tüm iş tamamlandığında bir işlemde gerçekleştirmek istediği, çağırması gerekir Complete bu işlem yöneticisi hareketi tamamlamak için kabul edilebilir olduğunu bildirmek için yalnızca bir kez yöntemi.When your application completes all work it wants to perform in a transaction, you should call the Complete method only once to inform that transaction manager that it is acceptable to commit the transaction. Bu yöntemini çağırmak başarısız işlem durdurur.Failing to call this method aborts the transaction.

Bir çağrı Dispose yöntemi işlem kapsamı sonunu işaretler.A call to the Dispose method marks the end of the transaction scope. Bu yöntemi çağrıldıktan sonra oluşan özel durumlarının işlem etkileyebilir değil.Exceptions that occur after calling this method may not affect the transaction.

Değerini değiştirirseniz Current bir kapsam içinde ne zaman bir özel durum Dispose çağrılır.If you modify the value of Current inside a scope, an exception is thrown when Dispose is called. Ancak, kapsamın sonunda, önceki değerine geri yüklenir.However, at the end of the scope, the previous value is restored. Ayrıca, arama, Dispose üzerinde Current işlem oluşturulmuş bir işlem kapsam içinde işlem kapsamı sonunda durdurur.In addition, if you call Dispose on Current inside a transaction scope that created the transaction, the transaction aborts at the end of the scope.

Oluşturucular

TransactionScope() TransactionScope() TransactionScope() TransactionScope()

Yeni bir örneğini başlatır TransactionScope sınıfı. Initializes a new instance of the TransactionScope class.

TransactionScope(Transaction) TransactionScope(Transaction) TransactionScope(Transaction) TransactionScope(Transaction)

Yeni bir örneğini başlatır TransactionScope sınıfı ve böylece bu işlem kapsamı işlem çalışmanın kullanır, belirtilen işlem ortam işlem ayarlar. Initializes a new instance of the TransactionScope class and sets the specified transaction as the ambient transaction, so that transactional work done inside the scope uses this transaction.

TransactionScope(Transaction, TimeSpan) TransactionScope(Transaction, TimeSpan) TransactionScope(Transaction, TimeSpan) TransactionScope(Transaction, TimeSpan)

Yeni bir örneğini başlatır TransactionScope sınıfı belirtilen zaman aşımı değerine sahip ve belirtilen işlem, ortam işlem ayarlar, böylece bu işlem kapsamı işlem çalışmanın kullanır. Initializes a new instance of the TransactionScope class with the specified timeout value, and sets the specified transaction as the ambient transaction, so that transactional work done inside the scope uses this transaction.

TransactionScope(Transaction, TimeSpan, EnterpriseServicesInteropOption) TransactionScope(Transaction, TimeSpan, EnterpriseServicesInteropOption) TransactionScope(Transaction, TimeSpan, EnterpriseServicesInteropOption) TransactionScope(Transaction, TimeSpan, EnterpriseServicesInteropOption)

Yeni bir örneğini başlatır TransactionScope COM birlikte çalışabilirlik gereksinimleri ve belirtilen zaman aşımı değeri sınıfı ve bu işlem kapsamı işlem çalışmanın kullanmasını sağlayacak şekilde belirtilen işlem ortam işlem ayarlar. . Initializes a new instance of the TransactionScope class with the specified timeout value and COM+ interoperability requirements, and sets the specified transaction as the ambient transaction, so that transactional work done inside the scope uses this transaction.

TransactionScope(Transaction, TimeSpan, TransactionScopeAsyncFlowOption) TransactionScope(Transaction, TimeSpan, TransactionScopeAsyncFlowOption) TransactionScope(Transaction, TimeSpan, TransactionScopeAsyncFlowOption) TransactionScope(Transaction, TimeSpan, TransactionScopeAsyncFlowOption)

[.NET Framework 4.5.1 ve sonraki sürümlerinde desteklenen] [Supported in the .NET Framework 4.5.1 and later versions] Yeni bir örneğini başlatır TransactionScope sınıfı belirtilen zaman aşımı değerine sahip ve belirtilen işlem, ortam işlem ayarlar, böylece bu işlem kapsamı işlem çalışmanın kullanır. Initializes a new instance of the TransactionScope class with the specified timeout value, and sets the specified transaction as the ambient transaction, so that transactional work done inside the scope uses this transaction.

TransactionScope(Transaction, TransactionScopeAsyncFlowOption) TransactionScope(Transaction, TransactionScopeAsyncFlowOption) TransactionScope(Transaction, TransactionScopeAsyncFlowOption) TransactionScope(Transaction, TransactionScopeAsyncFlowOption)

[.NET Framework 4.5.1 ve sonraki sürümlerinde desteklenen] [Supported in the .NET Framework 4.5.1 and later versions] Yeni bir örneğini başlatır TransactionScope sınıfı ve böylece bu işlem kapsamı işlem çalışmanın kullanır, belirtilen işlem ortam işlem ayarlar. Initializes a new instance of the TransactionScope class and sets the specified transaction as the ambient transaction, so that transactional work done inside the scope uses this transaction.

TransactionScope(TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeAsyncFlowOption)

Yeni bir örneğini başlatır TransactionScope belirtilen zaman uyumsuz akış seçeneğiyle sınıfı. Initializes a new instance of the TransactionScope class with the specified asynchronous flow option.

TransactionScope(TransactionScopeOption) TransactionScope(TransactionScopeOption) TransactionScope(TransactionScopeOption) TransactionScope(TransactionScopeOption)

Yeni bir örneğini başlatır TransactionScope belirli gereksinimlere sahip sınıf. Initializes a new instance of the TransactionScope class with the specified requirements.

TransactionScope(TransactionScopeOption, TimeSpan) TransactionScope(TransactionScopeOption, TimeSpan) TransactionScope(TransactionScopeOption, TimeSpan) TransactionScope(TransactionScopeOption, TimeSpan)

Yeni bir örneğini başlatır TransactionScope sınıfı gereksinimleri ve belirtilen zaman aşımı değeri. Initializes a new instance of the TransactionScope class with the specified timeout value and requirements.

TransactionScope(TransactionScopeOption, TimeSpan, TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeOption, TimeSpan, TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeOption, TimeSpan, TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeOption, TimeSpan, TransactionScopeAsyncFlowOption)

Yeni bir örneğini başlatır TransactionScope sınıfı belirtilen zaman aşımı değeri, gereksinimleri ve zaman uyumsuz akış seçeneği. Initializes a new instance of the TransactionScope class with the specified timeout value, requirements, and asynchronous flow option.

TransactionScope(TransactionScopeOption, TransactionOptions, EnterpriseServicesInteropOption) TransactionScope(TransactionScopeOption, TransactionOptions, EnterpriseServicesInteropOption) TransactionScope(TransactionScopeOption, TransactionOptions, EnterpriseServicesInteropOption) TransactionScope(TransactionScopeOption, TransactionOptions, EnterpriseServicesInteropOption)

Yeni bir örneğini başlatır TransactionScope sınıfı Belirtilen kapsam ve COM + birlikte çalışabilirlik gereksinimleri ve işlem seçenekleri. Initializes a new instance of the TransactionScope class with the specified scope and COM+ interoperability requirements, and transaction options.

TransactionScope(TransactionScopeOption, TransactionOptions, TransactionOptions) TransactionScope(TransactionScopeOption, TransactionOptions, TransactionOptions) TransactionScope(TransactionScopeOption, TransactionOptions, TransactionOptions) TransactionScope(TransactionScopeOption, TransactionOptions, TransactionOptions)

Yeni bir örneğini başlatır TransactionScope belirli gereksinimlere sahip sınıf. Initializes a new instance of the TransactionScope class with the specified requirements.

TransactionScope(TransactionScopeOption, TransactionOptions, TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeOption, TransactionOptions, TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeOption, TransactionOptions, TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeOption, TransactionOptions, TransactionScopeAsyncFlowOption)

[.NET Framework 4.5.1 ve sonraki sürümlerinde desteklenen] [Supported in the .NET Framework 4.5.1 and later versions] Yeni bir örneğini başlatır TransactionScope sınıfı belirtilen gereksinimleri ve zaman uyumsuz akış seçeneği. Initializes a new instance of the TransactionScope class with the specified requirements and asynchronous flow option.

TransactionScope(TransactionScopeOption, TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeOption, TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeOption, TransactionScopeAsyncFlowOption) TransactionScope(TransactionScopeOption, TransactionScopeAsyncFlowOption)

Yeni bir örneğini başlatır TransactionScope sınıfı belirtilen gereksinimleri ve zaman uyumsuz akış seçeneği. Initializes a new instance of the TransactionScope class with the specified requirements and asynchronous flow option.

Yöntemler

Complete() Complete() Complete() Complete()

Kapsamı içindeki tüm işlemler başarıyla tamamlandığını gösterir. Indicates that all operations within the scope are completed successfully.

Dispose() Dispose() Dispose() Dispose()

İşlem kapsamı sona erer. Ends the transaction scope.

Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Belirtilen nesnenin geçerli nesneyle eşit olup olmadığını belirler. Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Varsayılan karma işlevi olarak görev yapar. Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Alır Type geçerli örneği. Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Geçerli basit bir kopyasını oluşturur Object. Creates a shallow copy of the current Object.

(Inherited from Object)
ToString() ToString() ToString() ToString()

Geçerli nesneyi temsil eden bir dize döndürür. Returns a string that represents the current object.

(Inherited from Object)

Şunlara uygulanır

İş Parçacığı Güvenliği

Bu güvenli iş parçacığı türüdür. This type is thread safe.

Ayrıca Bkz.