MessageQueueTransaction Class

Definition

Namespace:

System.Messaging

Assembly:

System.Messaging.dll

Provides a Message Queuing internal transaction.

public ref class MessageQueueTransaction : IDisposable

public class MessageQueueTransaction : IDisposable

type MessageQueueTransaction = class
    interface IDisposable

Public Class MessageQueueTransaction
Implements IDisposable

Inheritance

Object

MessageQueueTransaction

Implements

IDisposable

Remarks

To send or receive a message as part of a transaction, you can use the MessageQueueTransaction class to create a transaction and pass it to an overload of the MessageQueue.Send method or the MessageQueue.Receive method that takes a transaction parameter. Messages sent as part of a transaction must be sent to transactional queues. Messages received from transactional queues must be received using a specified transaction.

In addition to the Receive method, you can receive messages with a specified identifier or specified correlation identifier. See the ReceiveById and ReceiveByCorrelationId methods for more information about selectively receiving messages from transactional queues.

Messages sent to transactional queues are removed if the transaction is committed. Similarly, messages received from transactional queues are returned to the queue if the transaction is rolled back.

If you instantiate a MessageQueueTransaction and pass it to an applicable overload of the Send method or Receive method to send a message to a non-transactional queue or receive a message from a non-transactional queue, the method throws an exception that indicates "Wrong Transaction Usage."

MessageQueueTransaction is threading apartment aware, so if your apartment state is STA, you cannot use the transaction in multiple threads. Visual Basic sets the state of the main thread to STA, so you must apply the MTAThreadAttribute in the Main subroutine. Otherwise, sending a transactional message using another thread throws a MessageQueueException exception. You apply the MTAThreadAttribute by using the following fragment.

<System.MTAThreadAttribute>
 public sub Main()

Constructors

MessageQueueTransaction()

Initializes a new instance of the MessageQueueTransaction class.

Properties

Status

Gets the status of the transaction.

Methods

Abort()	Rolls back the pending internal transaction.
Begin()	Begins a new Message Queuing internal transaction.
Commit()	Commits a pending internal transaction.
Dispose()	Releases all resources used by the MessageQueueTransaction.
Dispose(Boolean)	Releases the unmanaged resources used by the MessageQueueTransaction and optionally releases the managed resources.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
Finalize()	Releases the resources held by the current instance.
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

Thread Safety

This type is thread safe.

See also

• Transactional
• Send(Object)