TransactionAttribute Class

Definition

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

C#
[System.AttributeUsage(System.AttributeTargets.Class, Inherited=true)]
[System.Runtime.InteropServices.ComVisible(false)]
public sealed class TransactionAttribute : Attribute
Inheritance
TransactionAttribute
Attributes

Examples

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

C#
[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;
    }
}

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 Attributes.

Constructors

TransactionAttribute()

Initializes a new instance of the TransactionAttribute class, setting the component's requested transaction type to Required.

TransactionAttribute(TransactionOption)

Initializes a new instance of the TransactionAttribute class, specifying the transaction type.

Properties

Isolation

Gets or sets the transaction isolation level.

Timeout

Gets or sets the time-out for this transaction.

TypeId

When implemented in a derived class, gets a unique identifier for this Attribute.

(Inherited from Attribute)
Value

Gets the TransactionOption value for the transaction, optionally disabling the transaction service.

Methods

Equals(Object)

Returns a value that indicates whether this instance is equal to a specified object.

(Inherited from Attribute)
GetHashCode()

Returns the hash code for this instance.

(Inherited from Attribute)
GetType()

Gets the Type of the current instance.

(Inherited from Object)
IsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.

(Inherited from Attribute)
Match(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.

(Inherited from Attribute)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString()

Returns a string that represents the current object.

(Inherited from Object)

Explicit Interface Implementations

_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.

(Inherited from Attribute)
_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.

(Inherited from Attribute)
_Attribute.GetTypeInfoCount(UInt32)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).

(Inherited from Attribute)
_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.

(Inherited from Attribute)

Applies to

Product Versions
.NET Framework 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1