ReceiveCompletedEventArgs Sınıf

Tanım

public ref class ReceiveCompletedEventArgs : EventArgs

public class ReceiveCompletedEventArgs : EventArgs

type ReceiveCompletedEventArgs = class
    inherit EventArgs

Public Class ReceiveCompletedEventArgs
Inherits EventArgs

Devralma

Object

EventArgs

ReceiveCompletedEventArgs

Örnekler

Aşağıdaki kod örneği, olay için ReceiveCompleted bir olay işleyicisi oluşturur ve kullanarak olay temsilcisiyle ilişkilendirir ReceiveCompletedEventHandler. Olay işleyicisi, MyReceiveCompletedkuyruktan bir ileti alır ve gövdesini ekrana yazar.

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

using namespace System;
using namespace System::Messaging;
ref class MyNewQueue
{
public:

   //*************************************************
   // Provides an event handler for the ReceiveCompleted
   // event.
   //*************************************************
   static void MyReceiveCompleted( Object^ source, ReceiveCompletedEventArgs^ asyncResult )
   {
      // Connect to the queue.
      MessageQueue^ mq = dynamic_cast<MessageQueue^>(source);

      // End the asynchronous Receive operation.
      Message^ m = mq->EndReceive( asyncResult->AsyncResult );

      // Display message information on the screen.
      Console::WriteLine( "Message: {0}", m->Body );

      // Restart the asynchronous Receive operation.
      mq->BeginReceive();
      return;
   }
};


//*************************************************
// Provides an entry point into the application.
//         
// This example performs asynchronous receive operation
// processing.
//*************************************************
int main()
{
   // Create an instance of MessageQueue. Set its formatter.
   MessageQueue^ myQueue = gcnew MessageQueue( ".\\myQueue" );
   array<Type^>^p = gcnew array<Type^>(1);
   p[ 0 ] = String::typeid;
   myQueue->Formatter = gcnew XmlMessageFormatter( p );

   // Add an event handler for the ReceiveCompleted event.
   myQueue->ReceiveCompleted += gcnew ReceiveCompletedEventHandler( MyNewQueue::MyReceiveCompleted );

   // Begin the asynchronous receive operation.
   myQueue->BeginReceive();

   // Do other work on the current thread.
   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 performs asynchronous receive operation
        // processing.
        //**************************************************

        public static void Main()
        {
            // Create an instance of MessageQueue. Set its formatter.
            MessageQueue myQueue = new MessageQueue(".\\myQueue");
            myQueue.Formatter = new XmlMessageFormatter(new Type[]
                {typeof(String)});

            // Add an event handler for the ReceiveCompleted event.
            myQueue.ReceiveCompleted += new
                ReceiveCompletedEventHandler(MyReceiveCompleted);
            
            // Begin the asynchronous receive operation.
            myQueue.BeginReceive();
            
            // Do other work on the current thread.

            return;
        }

        //**************************************************
        // Provides an event handler for the ReceiveCompleted
        // event.
        //**************************************************
        
        private static void MyReceiveCompleted(Object source,
            ReceiveCompletedEventArgs asyncResult)
        {
            // Connect to the queue.
            MessageQueue mq = (MessageQueue)source;

            // End the asynchronous Receive operation.
            Message m = mq.EndReceive(asyncResult.AsyncResult);

            // Display message information on the screen.
            Console.WriteLine("Message: " + (string)m.Body);

            // Restart the asynchronous Receive operation.
            mq.BeginReceive();
            
            return;
        }
    }
}

Imports System.Messaging

Public Class MyNewQueue


        '
        ' Provides an entry point into the application.
        '		 
        ' This example performs asynchronous receive operation
        ' processing.
        '

        Public Shared Sub Main()

            ' Create an instance of MessageQueue. Set its formatter.
            Dim myQueue As New MessageQueue(".\myQueue")
            myQueue.Formatter = New XmlMessageFormatter(New Type() _
                {GetType([String])})

            ' Add an event handler for the ReceiveCompleted event.
            AddHandler myQueue.ReceiveCompleted, AddressOf _
                MyReceiveCompleted

            ' Begin the asynchronous receive operation.
            myQueue.BeginReceive()

            ' Do other work on the current thread.

            Return

        End Sub


        '
        ' Provides an event handler for the ReceiveCompleted
        ' event.
        '

        Private Shared Sub MyReceiveCompleted(ByVal [source] As _
            [Object], ByVal asyncResult As ReceiveCompletedEventArgs)

            ' Connect to the queue.
            Dim mq As MessageQueue = CType([source], MessageQueue)

            ' End the asynchronous Receive operation.
            Dim m As Message = mq.EndReceive(asyncResult.AsyncResult)

            ' Display message information on the screen.
            Console.WriteLine(("Message: " + CStr(m.Body)))

            ' Restart the asynchronous Receive operation.
            mq.BeginReceive()

            Return

        End Sub

End Class

Açıklamalar

Kuyruktan zaman uyumsuz olarak ileti almak için olay bildirimini kullandığınızda, ileti işlemenizi işleyen bir yöntem oluşturmanız gerekir. Kodunuzun zaman uyumsuz işlemeyi başlatmak için çağrısı BeginReceive yapması gerekir. bir ileti alındığında, uygulamanıza olay üzerinden ReceiveCompleted bildirim gönderilir. örneği ReceiveCompletedEventArgs , olay işleyicinizi çağıran olay temsilcisine geçirilir. Olayla ReceiveCompleted ilişkili veriler temsilcinin AsyncResult parametresinde yer alır.

Olay tamamlama bildirimi sağlamanın iki yolu vardır: olay bildirimi ve geri çağırmalar. ReceiveCompletedEventArgs yalnızca olay bildirimiyle kullanılır. Geri çağırmaları ve olay bildirimini karşılaştırma hakkında bilgi için MSDN'de "Olaylar ve Geri Aramalar" bölümüne bakın.

ReceiveCompletedEventArgs , üye aracılığıyla zaman uyumsuz alma işleminin sonunu başlatan iletiye Message erişim sağlar. Bu, iletiye alternatif bir erişimdir ve çağrısıyla MessageQueue.EndReceiveçok aynı şekilde davranır.

Özellikler

Yöntemler

Şunlara uygulanır

Ayrıca bkz.

• MessageQueue
• ReceiveCompletedEventHandler
• ReceiveCompleted
• BeginReceive()
• EndReceive(IAsyncResult)
• Message