TransactionOption Enumeração

Definição

Namespace:

System.EnterpriseServices

Assembly:

System.EnterpriseServices.dll

Especifica o tipo de transação automática solicitado pelo componente.

public enum class TransactionOption

[System.Serializable]
public enum TransactionOption

[<System.Serializable>]
type TransactionOption = 

Public Enum TransactionOption

Herança

Object

ValueType

Enum

TransactionOption

Atributos

SerializableAttribute

Campos

Disabled	0	Ignora qualquer transação no contexto atual.
NotSupported	1	Cria o componente em um contexto sem qualquer transação que o governe.
Required	3	Compartilha uma transação, caso exista e cria uma nova transação se necessário.
RequiresNew	4	Cria o componente com uma nova transação, independentemente do estado do contexto atual.
Supported	2	Compartilha uma transação, caso exista.

Exemplos

O exemplo de código a seguir demonstra o uso do TransactionOption tipo.

#using <System.EnterpriseServices.dll>

using namespace System;
using namespace System::EnterpriseServices;
using namespace System::Reflection;

// References:
// System.EnterpriseServices

// An instance of this class will not participate in transactions, but can
// share its caller's context even if its caller is configured as
// NotSupported, Supported, Required, or RequiresNew.
[Transaction(TransactionOption::Disabled)]
public ref class TransactionDisabled : public ServicedComponent
{
};

// An instance of this class will not participate in transactions, and will
// share its caller's context only if its caller is also configured as
// NotSupported.
[Transaction(TransactionOption::NotSupported)]
public ref class TransactionNotSupported : public ServicedComponent
{
};

// An instance of this class will participate in its caller's transaction
// if one exists.
[Transaction(TransactionOption::Supported)]
public ref class TransactionSupported : public ServicedComponent
{
};

// An instance of this class will participate in its caller's transaction
// if one exists. If not, a new transaction will be created for it.
[Transaction(TransactionOption::Required)]
public ref class TransactionRequired : public ServicedComponent
{
};

// A new transaction will always be created for an instance of this class.
[Transaction(TransactionOption::RequiresNew)]
public ref class TransactionRequiresNew : public ServicedComponent
{
};

using System;
using System.EnterpriseServices;
using System.Reflection;

// References:
// System.EnterpriseServices

// An instance of this class will not participate in transactions, but can
// share its caller's context even if its caller is configured as
// NotSupported, Supported, Required, or RequiresNew.
[Transaction(TransactionOption.Disabled)]
public class TransactionAttribute_TransactionDisabled : ServicedComponent
{
}

// An instance of this class will not participate in transactions, and will
// share its caller's context only if its caller is also configured as
// NotSupported.
[Transaction(TransactionOption.NotSupported)]
public class TransactionAttribute_TransactionNotSupported : ServicedComponent
{
}

// An instance of this class will participate in its caller's transaction
// if one exists.
[Transaction(TransactionOption.Supported)]
public class TransactionAttribute_TransactionSupported : ServicedComponent
{
}

// An instance of this class will participate in its caller's transaction
// if one exists. If not, a new transaction will be created for it.
[Transaction(TransactionOption.Required)]
public class TransactionAttribute_TransactionRequired : ServicedComponent
{
}

// A new transaction will always be created for an instance of this class.
[Transaction(TransactionOption.RequiresNew)]
public class TransactionAttribute_TransactionRequiresNew : ServicedComponent
{
}

Imports System.EnterpriseServices
Imports System.Reflection


' References:
' System.EnterpriseServices

' An instance of this class will not participate in transactions, but can
' share its caller's context even if its caller is configured as
' NotSupported, Supported, Required, or RequiresNew.
<Transaction(TransactionOption.Disabled)>  _
Public Class TransactionAttribute_TransactionDisabled
    Inherits ServicedComponent
End Class

' An instance of this class will not participate in transactions, and will
' share its caller's context only if its caller is also configured as
' NotSupported.
<Transaction(TransactionOption.NotSupported)>  _
Public Class TransactionAttribute_TransactionNotSupported
    Inherits ServicedComponent
End Class

' An instance of this class will participate in its caller's transaction
' if one exists.
<Transaction(TransactionOption.Supported)>  _
Public Class TransactionAttribute_TransactionSupported
    Inherits ServicedComponent
End Class

' An instance of this class will participate in its caller's transaction
' if one exists. If not, a new transaction will be created for it.
<Transaction(TransactionOption.Required)>  _
Public Class TransactionAttribute_TransactionRequired
    Inherits ServicedComponent
End Class

' A new transaction will always be created for an instance of this class.
<Transaction(TransactionOption.RequiresNew)>  _
Public Class TransactionAttribute_TransactionRequiresNew
    Inherits ServicedComponent
End Class

Comentários

Ao usar a Ferramenta de Instalação do .NET (Regsvcs.exe), a opção de transação para um ServicedComponent padrão é Disabled.