AcknowledgeTypes 列挙体
この列挙体には、メンバ値のビットごとの組み合わせを可能にする FlagsAttribute 属性が含まれています。
名前空間: System.Messagingアセンブリ: System.Messaging (system.messaging.dll 内)

<FlagsAttribute> _ Public Enumeration AcknowledgeTypes

メンバ名 | 説明 | |
---|---|---|
![]() | FullReachQueue | 元のメッセージがキューに到達した場合は肯定受信確認を要求するために使用され、キュー到達制限時間タイマがタイムアウトとなる場合または元のメッセージを認証できない場合は否定受信確認を要求するために使用されるマスク。 |
![]() | FullReceive | 元のメッセージが受信制限時間タイマがタイムアウトとなる前にキューから受信された場合は肯定受信確認を要求し、それ以外の場合は否定受信確認を要求するために使用するマスク。 |
![]() | NegativeReceive | 元のメッセージをキューから受信することに失敗した場合に否定受信確認を要求するために使用するマスク。 MessageQueue.Peek メソッドを使用するとキューからメッセージが削除されないため、メッセージをピークした場合でもこのタイプの受信確認は返されません。キューからメッセージを削除するのは MessageQueue.Receive メソッド (または関連する非同期 MessageQueue.BeginReceive メソッド) だけです。 |
![]() | None | 受信確認メッセージ (肯定または否定) をポストしないように要求するために使用するマスク。 |
![]() | NotAcknowledgeReachQueue | 元のメッセージがキューに到達しなかった場合に否定受信確認を要求するために使用するマスク。これはキュー到達制限時間タイマがタイムアウトとなった場合、またはメッセージが認証されなかった場合に発生します。 |
![]() | NotAcknowledgeReceive | 受信制限時間タイマがタイムアウトとなる前に、キューから元のメッセージを受信できなくなるというエラーが発生したときに否定受信確認を要求するために使用するマスク。 |
![]() | PositiveArrival | 元のメッセージがキューに到達した場合に肯定受信確認を要求するために使用するマスク。 |
![]() | PositiveReceive | 元のメッセージをキューから正常に取得した場合に肯定受信確認を要求するために使用するマスク。 |

AcknowledgeTypes クラスは、受信確認メッセージの 1 つ以上のカテゴリを要求するために組み合わせるフラグのセットを提供します。
アプリケーションがメッセージを送信するときには、元のメッセージの成功または失敗を示す受信確認メッセージをメッセージ キューが返すように要求できます。メッセージ キューは、ユーザーが指定した管理キューにこれらの受信確認メッセージを送信します。受信確認のタイプは 4 つのグループに大別できます。肯定到達受信確認、肯定読み取り受信確認、否定到達受信確認、および否定読み取り受信確認です。受信確認を要求すると、アプリケーションは特定の状況の通知を受信できるようになります。たとえば、メッセージが送信先キューに到達した、メッセージが取得された、タイムアウトによりメッセージが到達できない、タイムアウトによりメッセージが送信先キューから取得されないなどのメッセージです。
Message クラスを使用してメッセージをキューに送信するときには、アプリケーションが受信する受信確認のタイプを AcknowledgeType プロパティで指定し、受信確認メッセージを受信する管理キューを AdministrationQueue プロパティで指定します。
Message クラスを使用して管理キューの受信確認メッセージを読み取る場合、インスタンスの Acknowledgment プロパティは受信確認メッセージの原因となる状況、たとえば元のメッセージをキューから読み取る前にタイムアウトになったなどを示します。

オーダーを含んでいるメッセージをキューに送信し、またオーダーを含んでいるメッセージをキューから受信するコード例を次に示します。これは特に、元のメッセージがキューに到着するか、元のメッセージがキューから取得されたときに、肯定受信確認を要求します。
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
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. } } } }
#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; }
package MyProject; import System.*; import System.Messaging.*; /// <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(String[] args) { // 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; } //main //************************************************** // 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.get_Message()); } } //CreateQueue //************************************************** // 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.set_AdministrationQueue( new MessageQueue(".\\myAdministrationQueue")); myMessage.set_AcknowledgeType(AcknowledgeTypes.PositiveReceive | AcknowledgeTypes.PositiveArrival); // Send the Order to the queue. myQueue.Send(myMessage); return; } //SendMessage //************************************************** // Receives a message containing an Order. //************************************************** public String ReceiveMessage() { // Connect to the a queue on the local computer. MessageQueue myQueue = new MessageQueue(".\\myQueue"); myQueue.get_MessageReadPropertyFilter().set_CorrelationId(true); // Set the formatter to indicate body contains an Order. myQueue.set_Formatter(new XmlMessageFormatter( new Type[] { String.class.ToType() })); 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.get_Body().ToString()); Console.WriteLine("Id: " + myMessage.get_Id().ToString()); Console.WriteLine("____________________________________________"); returnString = myMessage.get_Id(); } catch (MessageQueueException exp) { // Handle Message Queuing exceptions. } // Handle invalid serialization format. catch (InvalidOperationException e) { Console.WriteLine(e.get_Message()); } // Catch other exceptions as necessary. return returnString; } //ReceiveMessage //************************************************** // Receives a message containing an Order. //************************************************** public void ReceiveAcknowledgment(String messageId, String queuePath) { boolean found = false; MessageQueue queue = new MessageQueue(queuePath); queue.get_MessageReadPropertyFilter().set_CorrelationId(true); queue.get_MessageReadPropertyFilter().set_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.get_CorrelationId().ToString()); Console.WriteLine("Id: " + myAcknowledgmentMessage.get_Id().ToString()); Console.WriteLine("Acknowledgment Type: " + myAcknowledgmentMessage.get_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.get_Message()); } // Handle other causes of invalid operation exception. } } //ReceiveAcknowledgment } //MyNewQueue

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。


System.Messaging 名前空間
Message
Message.AdministrationQueue
Message.AcknowledgeType
Message.Acknowledgment
- AcknowledgeTypes 列挙体のページへのリンク