Acknowledgment Acknowledgment Acknowledgment Acknowledgment Enum

Definizione

Specifica il risultato del tentativo di consegna di un messaggio.Specifies the result of an attempted message delivery.

public enum class Acknowledgment
[System.Serializable]
public enum Acknowledgment
type Acknowledgment = 
Public Enum Acknowledgment
Ereditarietà
AcknowledgmentAcknowledgmentAcknowledgmentAcknowledgment
Attributi

Campi

AccessDenied AccessDenied AccessDenied AccessDenied 32772

Messaggio di conferma negativo di arrivo che indica che l'applicazione mittente non dispone dei diritti necessari per inviare un messaggio alla coda di destinazione.A negative arrival acknowledgment indicating that the sending application does not have the necessary rights to send a message to the destination queue.

BadDestinationQueue BadDestinationQueue BadDestinationQueue BadDestinationQueue 32768

Messaggio di conferma negativo di arrivo che indica che la coda di destinazione non è disponibile per l'applicazione mittente.A negative arrival acknowledgment indicating that the destination queue is not available to the sending application.

BadEncryption BadEncryption BadEncryption BadEncryption 32775

Messaggio di conferma negativo di arrivo che indica che il gestore della coda di destinazione non è riuscito a decrittare un messaggio privato.A negative arrival acknowledgment indicating that the destination queue manager could not decrypt a private message.

BadSignature BadSignature BadSignature BadSignature 32774

Messaggio di conferma negativo di arrivo che indica che la firma digitale del messaggio originale non è valida e Accodamento messaggi non l'ha autenticata.A negative arrival acknowledgment indicating that the original message's digital signature is not valid and could not be authenticated by Message Queuing.

CouldNotEncrypt CouldNotEncrypt CouldNotEncrypt CouldNotEncrypt 32776

Messaggio di conferma negativo di arrivo che indica che il gestore della coda di origine non è riuscito a crittografare un messaggio privato.A negative arrival acknowledgment indicating that the source queue manager could not encrypt a private message.

HopCountExceeded HopCountExceeded HopCountExceeded HopCountExceeded 32773

Messaggio di conferma negativo di arrivo che indica che è stato superato il numero di hop del messaggio originale, indicativo del numero di server intermedi.A negative arrival acknowledgment indicating that the original message's hop count (which indicates the number of intermediate servers) was exceeded. Il numero massimo di hop, 15, viene impostato da Accodamento messaggi e non è modificabile.The maximum hop count, 15, is set by Message Queuing and is immutable.

None None None None 0

Il messaggio non è un messaggio di conferma.The message is not an acknowledgment message.

NotTransactionalMessage NotTransactionalMessage NotTransactionalMessage NotTransactionalMessage 32778

Messaggio di conferma negativo di arrivo che indica che a una coda transazionale è stato inviato un messaggio non transazionale.A negative arrival acknowledgment indicating that a non-transactional message was sent to a transactional queue.

NotTransactionalQueue NotTransactionalQueue NotTransactionalQueue NotTransactionalQueue 32777

Messaggio di conferma negativo di arrivo che indica che a una coda non transazionale è stato inviato un messaggio transazionale.A negative arrival acknowledgment indicating that a transactional message was sent to a non-transactional queue.

Purged Purged Purged Purged 32769

Messaggio di conferma negativo di arrivo che indica che il messaggio è stato cancellato prima di raggiungere la coda di destinazione.A negative arrival acknowledgment indicating that the message was purged before reaching its destination queue.

QueueDeleted QueueDeleted QueueDeleted QueueDeleted 49152

Messaggio di conferma negativo di lettura che indica che la coda è stata eliminata prima che il messaggio venisse letto.A negative read acknowledgment indicating that the queue was deleted before the message could be read.

QueueExceedMaximumSize QueueExceedMaximumSize QueueExceedMaximumSize QueueExceedMaximumSize 32771

Messaggio di conferma negativo di arrivo che indica che il messaggio originale non è stato consegnato perché la coda di destinazione è piena.A negative arrival acknowledgment indicating that the original message was not delivered because its destination queue is full.

QueuePurged QueuePurged QueuePurged QueuePurged 49153

Messaggio di conferma negativo di lettura che indica che la coda è stata cancellata prima che il messaggio venisse letto.A negative read acknowledgment indicating that the queue was purged before the message could be read.

ReachQueue ReachQueue ReachQueue ReachQueue 2

Messaggio di conferma positivo di arrivo che indica che il messaggio originale ha raggiunto la coda di destinazione.A positive arrival acknowledgment indicating that the original message reached its destination queue.

ReachQueueTimeout ReachQueueTimeout ReachQueueTimeout ReachQueueTimeout 32770

Messaggio di conferma negativo di arrivo che indica che il timer di raggiungimento della coda o di ricezione è scaduto prima che il messaggio originale potesse raggiungere la coda di destinazione.A negative arrival acknowledgment indicating that the time-to-reach-queue or time-to-be-received timer expired before the original message could reach the destination queue.

Receive Receive Receive Receive 16384

Messaggio di conferma positivo di lettura che indica che l'applicazione ricevente ha ricevuto il messaggio originale.A positive read acknowledgment indicating that the original message was received by the receiving application.

ReceiveTimeout ReceiveTimeout ReceiveTimeout ReceiveTimeout 49154

Messaggio di conferma negativo di lettura che indica che la coda non ha ricevuto il messaggio originale prima dello scadere del timer di ricezione.A negative read acknowledgment indicating that the original message was not received from the queue before its time-to-be-received timer expired.

Esempi

Esempio di codice seguente invia e riceve un messaggio contenente un ordine a e da una coda.The following code example sends and receives a message containing an order to and from a queue. In particolare richiede una conferma positiva quando il messaggio originale raggiunge o viene recuperato dalla coda.It specifically requests a positive acknowledgment when the original message reaches or is retrieved from the queue.

#using <system.dll>
#using <system.messaging.dll>

using namespace System;
using namespace System::Messaging;
ref class MyNewQueue
{
public:
   static void CreateQueue( String^ queuePath )
   {
      try
      {
         if (  !MessageQueue::Exists( queuePath ) )
         {
            MessageQueue::Create( queuePath );
         }
         else
         {
            Console::WriteLine(  "{0} already exists.", queuePath );
         }
      }
      catch ( MessageQueueException^ e ) 
      {
         Console::WriteLine( e->Message );
      }

   }

   void SendMessage()
   {
      // Connect to a queue on the local computer.
      MessageQueue^ myQueue = gcnew MessageQueue( ".\\myQueue" );

      // Create a new message.
      Message^ myMessage = gcnew Message( "Original Message" );
      myMessage->AdministrationQueue = gcnew MessageQueue( ".\\myAdministrationQueue" );
      myMessage->AcknowledgeType = (AcknowledgeTypes)(AcknowledgeTypes::PositiveReceive | AcknowledgeTypes::PositiveArrival);

      // Send the Order to the queue.
      myQueue->Send( myMessage );
      return;
   }

   String^ ReceiveMessage()
   {
      // Connect to the a queue on the local computer.
      MessageQueue^ myQueue = gcnew MessageQueue( ".\\myQueue" );
      myQueue->MessageReadPropertyFilter->CorrelationId = true;
      array<Type^>^p = gcnew array<Type^>(1);
      p[ 0 ] = String::typeid;
      myQueue->Formatter = gcnew XmlMessageFormatter( p );
      String^ returnString = nullptr;
      try
      {
         // Receive and format the message. 
         Message^ myMessage = myQueue->Receive();

         // Display message information.
         Console::WriteLine( "____________________________________________" );
         Console::WriteLine( "Original message information--" );
         Console::WriteLine( "Body: {0}", myMessage->Body );
         Console::WriteLine( "Id: {0}", myMessage->Id );
         Console::WriteLine( "____________________________________________" );
         returnString = myMessage->Id;
      }
      catch ( MessageQueueException^ ) 
      {
         // Handle Message Queuing exceptions.
      }
      // Handle invalid serialization format.
      catch ( InvalidOperationException^ e ) 
      {
         Console::WriteLine( e->Message );
      }

      // Catch other exceptions as necessary.
      return returnString;
   }

   void ReceiveAcknowledgment( String^ messageId, String^ queuePath )
   {
      bool found = false;
      MessageQueue^ queue = gcnew MessageQueue( queuePath );
      queue->MessageReadPropertyFilter->CorrelationId = true;
      queue->MessageReadPropertyFilter->Acknowledgment = true;
      try
      {
         while ( queue->PeekByCorrelationId( messageId ) != nullptr )
         {
            Message^ myAcknowledgmentMessage = queue->ReceiveByCorrelationId( messageId );

            // Output acknowledgment message information. The correlation Id is identical
            // to the id of the original message.
            Console::WriteLine( "Acknowledgment Message Information--" );
            Console::WriteLine( "Correlation Id: {0}", myAcknowledgmentMessage->CorrelationId );
            Console::WriteLine( "Id: {0}", myAcknowledgmentMessage->Id );
            Console::WriteLine( "Acknowledgment Type: {0}", myAcknowledgmentMessage->Acknowledgment );
            Console::WriteLine( "____________________________________________" );
            found = true;
         }
      }
      catch ( InvalidOperationException^ e ) 
      {
         // This exception would be thrown if there is no (further) acknowledgment message
         // with the specified correlation Id. Only output a message if there are no messages;
         // not if the loop has found at least one.
         if ( found == false )
         {
            Console::WriteLine( e->Message );
         }

         // Handle other causes of invalid operation exception.
      }

   }

};

int main()
{
   // Create a new instance of the class.
   MyNewQueue^ myNewQueue = gcnew MyNewQueue;

   // Create new queues.
   MyNewQueue::CreateQueue( ".\\myQueue" );
   MyNewQueue::CreateQueue( ".\\myAdministrationQueue" );

   // Send messages to a queue.
   myNewQueue->SendMessage();

   // Receive messages from a queue.
   String^ messageId = myNewQueue->ReceiveMessage();

   // Receive acknowledgment message.
   if ( messageId != nullptr )
   {
      myNewQueue->ReceiveAcknowledgment( messageId, ".\\myAdministrationQueue" );
   }

   return 0;
}
using System;
using System.Messaging;

namespace MyProject
{

	/// <summary>
	/// Provides a container class for the example.
	/// </summary>
	public class MyNewQueue
	{

		//**************************************************
		// Provides an entry point into the application.
		//		 
		// This example sends and receives a message from
		// a queue.
		//**************************************************

		public static void Main()
		{
			// Create a new instance of the class.
			MyNewQueue myNewQueue = new MyNewQueue();

			// Create new queues.
			CreateQueue(".\\myQueue");
			CreateQueue(".\\myAdministrationQueue");

			// Send messages to a queue.
			myNewQueue.SendMessage();

			// Receive messages from a queue.
			string messageId = myNewQueue.ReceiveMessage(); 

			// Receive acknowledgment message.
			if(messageId != null)
			{
				myNewQueue.ReceiveAcknowledgment(messageId, ".\\myAdministrationQueue");
			}

			return;
		}

		//**************************************************
		// Creates a new queue.
		//**************************************************

		public static void CreateQueue(string queuePath)
		{
			try	
			{
				if(!MessageQueue.Exists(queuePath))
				{
					MessageQueue.Create(queuePath);
				}
				else
				{
					Console.WriteLine(queuePath + " already exists.");
				}
			}
			catch (MessageQueueException e)
			{
				Console.WriteLine(e.Message);
			}
			
		}


		//**************************************************
		// Sends a string message to a queue.
		//**************************************************
		
		public void SendMessage()
		{

			// Connect to a queue on the local computer.
			MessageQueue myQueue = new MessageQueue(".\\myQueue");

			// Create a new message.
			Message myMessage = new Message("Original Message"); 

			myMessage.AdministrationQueue = new MessageQueue(".\\myAdministrationQueue");
			myMessage.AcknowledgeType = AcknowledgeTypes.PositiveReceive | AcknowledgeTypes.PositiveArrival;

			// Send the Order to the queue.
			myQueue.Send(myMessage);

			return;
		}


		//**************************************************
		// Receives a message containing an Order.
		//**************************************************
		
		public  string ReceiveMessage()
		{
			// Connect to the a queue on the local computer.
			MessageQueue myQueue = new MessageQueue(".\\myQueue");

			myQueue.MessageReadPropertyFilter.CorrelationId = true;


			// Set the formatter to indicate body contains an Order.
			myQueue.Formatter = new XmlMessageFormatter(new Type[]
				{typeof(string)});

			string returnString = null;
			
			try
			{
				// Receive and format the message. 
				Message myMessage =	myQueue.Receive(); 


				// Display message information.
				Console.WriteLine("____________________________________________");
				Console.WriteLine("Original message information--");
				Console.WriteLine("Body: " +myMessage.Body.ToString());
				Console.WriteLine("Id: " + myMessage.Id.ToString());
				Console.WriteLine("____________________________________________");

				returnString =  myMessage.Id;
				
			}
			
			catch (MessageQueueException)
			{
				// Handle Message Queuing exceptions.
			}

			// Handle invalid serialization format.
			catch (InvalidOperationException e)
			{
				Console.WriteLine(e.Message);
			}
			
			// Catch other exceptions as necessary.

			return returnString;
		}

		//**************************************************
		// Receives a message containing an Order.
		//**************************************************
		
		public void ReceiveAcknowledgment(string messageId, string queuePath)
		{
			bool found = false;
			MessageQueue queue = new MessageQueue(queuePath);
			queue.MessageReadPropertyFilter.CorrelationId = true;
			queue.MessageReadPropertyFilter.Acknowledgment = true;

			try
			{
				while(queue.PeekByCorrelationId(messageId) != null)
				{
					Message myAcknowledgmentMessage = queue.ReceiveByCorrelationId(messageId);
			
					// Output acknowledgment message information. The correlation Id is identical
					// to the id of the original message.
					Console.WriteLine("Acknowledgment Message Information--");
					Console.WriteLine("Correlation Id: " + myAcknowledgmentMessage.CorrelationId.ToString());
					Console.WriteLine("Id: " + myAcknowledgmentMessage.Id.ToString());
					Console.WriteLine("Acknowledgment Type: " + myAcknowledgmentMessage.Acknowledgment.ToString());
					Console.WriteLine("____________________________________________");

					found = true;
				}
			}
			catch (InvalidOperationException e)
			{ 
				// This exception would be thrown if there is no (further) acknowledgment message
				// with the specified correlation Id. Only output a message if there are no messages;
				// not if the loop has found at least one.
				if(found == false)
				{	
					Console.WriteLine(e.Message);
				}

				// Handle other causes of invalid operation exception.
			}

		}
	}
}
Imports System
Imports System.Messaging


' Provides a container class for the example.

Public Class MyNewQueue
   
   

   ' Provides an entry point into the application.       
   ' This example sends and receives a message from
   ' a queue.
      
   Public Shared Sub Main()
         ' Create a new instance of the class.
         Dim myNewQueue As New MyNewQueue()
         
         ' Create new queues.
         CreateQueue(".\myQueue")
         CreateQueue(".\myAdministrationQueue")
         
         ' Send messages to a queue.
         myNewQueue.SendMessage()
         
         ' Receive messages from a queue.
         Dim messageId As String = myNewQueue.ReceiveMessage()
         
         ' Receive acknowledgment message.
         If Not (messageId Is Nothing) Then
            myNewQueue.ReceiveAcknowledgment(messageId, ".\myAdministrationQueue")
         End If
         
         Return
   End Sub 'Main
      
      
      ' Creates a new queue.

   Public Shared Sub CreateQueue(queuePath As String)
         Try
            If Not MessageQueue.Exists(queuePath) Then
               MessageQueue.Create(queuePath)
            Else
               Console.WriteLine((queuePath + " already exists."))
            End If
         Catch e As MessageQueueException
            Console.WriteLine(e.Message)
         End Try
   End Sub 'CreateQueue
       
      
      
 
      ' Sends a string message to a queue.
 
   Public Sub SendMessage()
         
         ' Connect to a queue on the local computer.
         Dim myQueue As New MessageQueue(".\myQueue")
         
         ' Create a new message.
         Dim myMessage As New Message("Original Message")
         
         myMessage.AdministrationQueue = New MessageQueue(".\myAdministrationQueue")
         myMessage.AcknowledgeType = AcknowledgeTypes.PositiveReceive Or AcknowledgeTypes.PositiveArrival
         
         ' Send the Order to the queue.
         myQueue.Send(myMessage)
         
         Return
   End Sub 'SendMessage
      
      
      
 
      ' Receives a message containing an Order.
 
   Public Function ReceiveMessage() As String
         ' Connect to the a queue on the local computer.
         Dim myQueue As New MessageQueue(".\myQueue")
         
         myQueue.MessageReadPropertyFilter.CorrelationId = True
         
         
         ' Set the formatter to indicate body contains an Order.
         myQueue.Formatter = New XmlMessageFormatter(New Type() {GetType(String)})
         
         Dim returnString As String = Nothing
         
         Try
            ' Receive and format the message. 
            Dim myMessage As Message = myQueue.Receive()
            
            
            ' Display message information.
            Console.WriteLine("____________________________________________")
            Console.WriteLine("Original message information--")
            Console.WriteLine(("Body: " + myMessage.Body.ToString()))
            Console.WriteLine(("Id: " + myMessage.Id.ToString()))
            Console.WriteLine("____________________________________________")
            
            returnString = myMessage.Id
         
         
                  
         ' Handle invalid serialization format.
         Catch e As InvalidOperationException
            Console.WriteLine(e.Message)
         End Try
         
         ' Catch other exceptions as necessary.
         Return returnString
   End Function 'ReceiveMessage
      
      
 
      ' Receives a message containing an Order.
 
   Public Sub ReceiveAcknowledgment(messageId As String, queuePath As String)
         Dim found As Boolean = False
         Dim queue As New MessageQueue(queuePath)
         queue.MessageReadPropertyFilter.CorrelationId = True
         queue.MessageReadPropertyFilter.Acknowledgment = True
         
         Try
            While Not (queue.PeekByCorrelationId(messageId) Is Nothing)
               Dim myAcknowledgmentMessage As Message = queue.ReceiveByCorrelationId(messageId)
               
               ' Output acknowledgment message information. The correlation Id is identical
               ' to the id of the original message.
               Console.WriteLine("Acknowledgment Message Information--")
               Console.WriteLine(("Correlation Id: " + myAcknowledgmentMessage.CorrelationId.ToString()))
               Console.WriteLine(("Id: " + myAcknowledgmentMessage.Id.ToString()))
               Console.WriteLine(("Acknowledgment Type: " + myAcknowledgmentMessage.Acknowledgment.ToString()))
               Console.WriteLine("____________________________________________")
               
               found = True
            End While
         Catch e As InvalidOperationException
            ' This exception would be thrown if there is no (further) acknowledgment message
            ' with the specified correlation Id. Only output a message if there are no messages;
            ' not if the loop has found at least one.
            If found = False Then
               Console.WriteLine(e.Message)
            End If
         End Try 
   End Sub 'ReceiveAcknowledgment ' Handle other causes of invalid operation exception.
 End Class 'MyNewQueue

Commenti

Il Acknowledgment classe definisce i tipi di messaggi di riconoscimento che Accodamento messaggi nella coda di amministrazione e le condizioni che causano un messaggio di riconoscimento da inviare.The Acknowledgment class defines the types of acknowledgment messages that Message Queuing posts in the administration queue and the conditions that cause an acknowledgment message to be sent. Tipi di riconoscimento possono essere ampiamente suddivisi in quattro gruppi: acknowledgment positivo di arrivo, riconoscimenti positivi di lettura, i riconoscimenti di conferma negativo di arrivo e riconoscimenti negativi di lettura.Acknowledgment types can be divided broadly into four groups: positive arrival acknowledgments, positive read acknowledgments, negative arrival acknowledgments, and negative read acknowledgments.

La coda di amministrazione associata al messaggio è specificato nel Message.AdministrationQueue proprietà.The administration queue associated with message is specified in the Message.AdministrationQueue property.

Accodamento messaggi imposta il Message.Acknowledgment proprietà su uno del Acknowledgment valori dell'enumerazione durante la creazione di un messaggio di conferma.Message Queuing sets the Message.Acknowledgment property to one of the Acknowledgment enumeration values when it creates an acknowledgment message. Il Message.Acknowledgment valore della proprietà è in genere significativo solo quando l'istanza fa riferimento a un messaggio di riconoscimento inviati al sistema.The Message.Acknowledgment property value is typically meaningful only when the instance refers to a system-sent acknowledgment message. La lettura di Message.Acknowledgment proprietà per un messaggio diverso da un messaggio di riconoscimento genera un'eccezione.Reading the Message.Acknowledgment property for a message other than an acknowledgment message throws an exception.

Il servizio Accodamento messaggi non invia un messaggio di conferma, a meno che l'applicazione mittente lo richiede che lo scopo.Message Queuing does not send an acknowledgment message unless the sending application requests that it do so. L'applicazione effettua questa richiesta, impostando il valore appropriato per il Message.AcknowledgeType proprietà.Your application makes this request by setting the appropriate value for the Message.AcknowledgeType property. Accodamento messaggi invia alla coda di amministrazione specificata tutti i messaggi di riconoscimento il AdministrationQueue proprietà dell'originale Message.Message Queuing sends all acknowledgment messages to the administration queue specified in the AdministrationQueue property of the original Message.

Si applica a