.NET Framework Class Library
TransactionAttribute Class

Specifies the type of transaction that is available to the attributed object. Permissible values are members of the TransactionOption enumeration.

Inheritance Hierarchy
SystemObject
   SystemAttribute
    System.EnterpriseServicesTransactionAttribute

Namespace:   System.EnterpriseServices
Assembly:  System.EnterpriseServices (in System.EnterpriseServices.dll)
Syntax
<[%$TOPIC/0x56scs9_en-us_VS_110_3_0_0_0_0%]([%$TOPIC/0x56scs9_en-us_VS_110_3_0_0_0_1%].Class, Inherited := True)> _
<[%$TOPIC/0x56scs9_en-us_VS_110_3_0_0_0_2%](False)> _
Public NotInheritable Class TransactionAttribute _
	Inherits [%$TOPIC/0x56scs9_en-us_VS_110_3_0_0_0_3%]
[[%$TOPIC/0x56scs9_en-us_VS_110_3_0_1_0_0%]([%$TOPIC/0x56scs9_en-us_VS_110_3_0_1_0_1%].Class, Inherited = true)]
[[%$TOPIC/0x56scs9_en-us_VS_110_3_0_1_0_2%](false)]
public sealed class TransactionAttribute : [%$TOPIC/0x56scs9_en-us_VS_110_3_0_1_0_3%]
[[%$TOPIC/0x56scs9_en-us_VS_110_3_0_2_0_0%]([%$TOPIC/0x56scs9_en-us_VS_110_3_0_2_0_1%]::Class, Inherited = true)]
[[%$TOPIC/0x56scs9_en-us_VS_110_3_0_2_0_2%](false)]
public ref class TransactionAttribute sealed : public [%$TOPIC/0x56scs9_en-us_VS_110_3_0_2_0_3%]
[<[%$TOPIC/0x56scs9_en-us_VS_110_3_0_3_0_0%]>]
[<[%$TOPIC/0x56scs9_en-us_VS_110_3_0_3_0_1%]([%$TOPIC/0x56scs9_en-us_VS_110_3_0_3_0_2%].Class, Inherited = true)>]
[<[%$TOPIC/0x56scs9_en-us_VS_110_3_0_3_0_3%](false)>]
type TransactionAttribute =  
    class 
        inherit [%$TOPIC/0x56scs9_en-us_VS_110_3_0_3_0_4%] 
    end

The TransactionAttribute type exposes the following members.

Constructors
  NameDescription
Public method TransactionAttributeInitializes a new instance of the TransactionAttribute class, setting the component's requested transaction type to Required.
Public method TransactionAttribute(TransactionOption)Initializes a new instance of the TransactionAttribute class, specifying the transaction type.
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Properties
  NameDescription
Public property IsolationGets or sets the transaction isolation level.
Public property TimeoutGets or sets the time-out for this transaction.
Public property TypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
Public property ValueGets the TransactionOption value for the transaction, optionally disabling the transaction service.
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Methods
  NameDescription
Public method EqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Public method GetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public method GetTypeGets the Type of the current instance. (Inherited from Object.)
Public method IsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public method MatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Public method ToStringReturns a string that represents the current object. (Inherited from Object.)
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Explicit Interface Implementations
  NameDescription
Explicit interface implemetation Private method _AttributeGetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeInvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
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Remarks

If a transaction type is specified with this attribute, it must not be changed in the COM+ catalog. If the transaction type is changed in the COM+ catalog, the same transaction type must be specified on the component with this attribute.

For more information about using attributes, see Extending Metadata Using Attributes.

Examples

The following code example demonstrates the use of the TransactionAttribute to mark a ServicedComponent as transactional.

<Transaction()>  _
Public Class TransactionalComponent
    Inherits ServicedComponent


    Public Sub TransactionalMethod(ByVal data As String) 

        ContextUtil.DeactivateOnReturn = True
        ContextUtil.MyTransactionVote = TransactionVote.Abort

        ' Do work with data. Return if any errors occur. 
        ' Vote to commit. If any errors occur, this code will not execute.
        ContextUtil.MyTransactionVote = TransactionVote.Commit

    End Sub 'TransactionalMethod 
End Class 'TransactionalComponent
[Transaction]
public class TransactionalComponent : ServicedComponent
{

    public void TransactionalMethod (string data)
    {

      ContextUtil.DeactivateOnReturn = true;
      ContextUtil.MyTransactionVote = TransactionVote.Abort;

      // Do work with data. Return if any errors occur. 

      // Vote to commit. If any errors occur, this code will not execute.
      ContextUtil.MyTransactionVote = TransactionVote.Commit;

    }

}

[assembly:System::Reflection::AssemblyKeyFile("Transaction.snk")];
[Transaction]
public ref class TransactionalComponent: public ServicedComponent
{
public:
   void TransactionalMethod( String^ data )
   {
      ContextUtil::DeactivateOnReturn = true;
      ContextUtil::MyTransactionVote = TransactionVote::Abort;

      // do work with data
      ContextUtil::MyTransactionVote = TransactionVote::Commit;
   }

};
Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
Platforms

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.