MessagePropertyFilter 클래스

정의

public ref class MessagePropertyFilter

public ref class MessagePropertyFilter : ICloneable

[System.ComponentModel.TypeConverter(typeof(System.ComponentModel.ExpandableObjectConverter))]
public class MessagePropertyFilter

[System.ComponentModel.TypeConverter(typeof(System.ComponentModel.ExpandableObjectConverter))]
public class MessagePropertyFilter : ICloneable

[<System.ComponentModel.TypeConverter(typeof(System.ComponentModel.ExpandableObjectConverter))>]
type MessagePropertyFilter = class

[<System.ComponentModel.TypeConverter(typeof(System.ComponentModel.ExpandableObjectConverter))>]
type MessagePropertyFilter = class
    interface ICloneable

Public Class MessagePropertyFilter

Public Class MessagePropertyFilter
Implements ICloneable

상속

Object

MessagePropertyFilter

특성

TypeConverterAttribute

구현

ICloneable

예제

다음 코드 예제에서는 서로 다른 우선 순위의 두 메시지를 큐에 보내고 이후에 검색합니다.

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

using namespace System;
using namespace System::Messaging;

/// <summary>
/// Provides a container class for the example.
/// </summary>
ref class MyNewQueue
{
   //**************************************************
   // Sends a string message to a queue.
   //**************************************************
public:
   void SendMessage( MessagePriority priority, String^ messageBody )
   {
      // Connect to a queue on the local computer.
      MessageQueue^ myQueue = gcnew MessageQueue( ".\\myQueue" );

      // Create a new message.
      Message^ myMessage = gcnew Message;
      if ( priority > MessagePriority::Normal )
      {
         myMessage->Body = "High Priority: {0}",messageBody;
      }
      else
      {
         myMessage->Body = messageBody;
      }

      // Set the priority of the message.
      myMessage->Priority = priority;

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

      return;
   }

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

      // Set the queue to read the priority. By default, it
      // is not read.
      myQueue->MessageReadPropertyFilter->Priority = true;

      // Set the formatter to indicate body contains a String^.
      array<Type^>^ p = gcnew array<Type^>(1);
      p[ 0 ] = String::typeid;
      myQueue->Formatter = gcnew XmlMessageFormatter( p );
      try
      {
         // Receive and format the message. 
         Message^ myMessage = myQueue->Receive();

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

      // Catch other exceptions as necessary.

      return;
   }
};

//**************************************************
// Provides an entry point into the application.
//		 
// This example sends and receives a message from
// a queue.
//**************************************************
int main()
{
   // Create a new instance of the class.
   MyNewQueue^ myNewQueue = gcnew MyNewQueue;

   // Send messages to a queue.
   myNewQueue->SendMessage( MessagePriority::Normal, "First Message Body." );
   myNewQueue->SendMessage( MessagePriority::Highest, "Second Message Body." );

   // Receive messages from a queue.
   myNewQueue->ReceiveMessage();
   myNewQueue->ReceiveMessage();

   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();

            // Send messages to a queue.
            myNewQueue.SendMessage(MessagePriority.Normal, "First Message Body.");
            myNewQueue.SendMessage(MessagePriority.Highest, "Second Message Body.");

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

            return;
        }

        //**************************************************
        // Sends a string message to a queue.
        //**************************************************
        
        public void SendMessage(MessagePriority priority, string messageBody)
        {

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

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

            if(priority > MessagePriority.Normal)
            {
                myMessage.Body = "High Priority: " + messageBody;
            }
            else
            {
                myMessage.Body = messageBody;
            }

            // Set the priority of the message.
            myMessage.Priority = priority;

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

            return;
        }

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

            // Set the queue to read the priority. By default, it
            // is not read.
            myQueue.MessageReadPropertyFilter.Priority = true;

            // Set the formatter to indicate body contains a string.
            myQueue.Formatter = new XmlMessageFormatter(new Type[]
                {typeof(string)});
            
            try
            {
                // Receive and format the message.
                Message myMessage =	myQueue.Receive();

                // Display message information.
                Console.WriteLine("Priority: " +
                    myMessage.Priority.ToString());
                Console.WriteLine("Body: " +
                    myMessage.Body.ToString());
            }
            
            catch (MessageQueueException)
            {
                // Handle Message Queuing exceptions.
            }

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

            return;
        }
    }
}

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()
         
         ' Send messages to a queue.
         myNewQueue.SendMessage(MessagePriority.Normal, "First Message Body.")
         myNewQueue.SendMessage(MessagePriority.Highest, "Second Message Body.")
         
         ' Receive messages from a queue.
         myNewQueue.ReceiveMessage()
         myNewQueue.ReceiveMessage()
         
         Return
      End Sub
      
      
      

      ' Sends a string message to a queue.

      Public Sub SendMessage(priority As MessagePriority, messageBody As String)
         
         ' Connect to a queue on the local computer.
         Dim myQueue As New MessageQueue(".\myQueue")
         
         ' Create a new message.
         Dim myMessage As New Message()
         
         If priority > MessagePriority.Normal Then
            myMessage.Body = "High Priority: " + messageBody
         Else
            myMessage.Body = messageBody
         End If 
         ' Set the priority of the message.
         myMessage.Priority = priority
         
         
         ' Send the Order to the queue.
         myQueue.Send(myMessage)
         
         Return
      End Sub
      
      
      

      ' Receives a message.

      Public Sub ReceiveMessage()
         ' Connect to the a queue on the local computer.
         Dim myQueue As New MessageQueue(".\myQueue")
         
         ' Set the queue to read the priority. By default, it
         ' is not read.
         myQueue.MessageReadPropertyFilter.Priority = True
         
         ' Set the formatter to indicate body contains a string.
         myQueue.Formatter = New XmlMessageFormatter(New Type() {GetType(String)})
         
         Try
            ' Receive and format the message. 
            Dim myMessage As Message = myQueue.Receive()
            
            ' Display message information.
            Console.WriteLine(("Priority: " + myMessage.Priority.ToString()))
            Console.WriteLine(("Body: " + myMessage.Body.ToString()))
         
         
         
         ' Handle invalid serialization format.
         Catch e As InvalidOperationException
            Console.WriteLine(e.Message)
         End Try
         
         ' Catch other exceptions as necessary.
         Return
      End Sub
   End Class

설명

인스턴스에서 MessageQueue 설정하면 MessagePropertyFilter 메시지를 피킹하거나 받을 때 검색되는 속성 집합이 제어됩니다. 필터는 메시지 정보를 검색하는 인스턴스 MessageQueue 에 설정됩니다. 부울 반환 멤버false를 MessagePropertyFilter 설정하면 연결된 Message 속성의 정보가 에 의해 MessageQueue검색되지 않도록 합니다.

부울 값이 아닌 몇 가지 필터 속성이 있습니다. 이 값 Message.Body은 , Message.Extension또는 Message.Label.

제한된 속성 집합을 검색하면 적은 양의 데이터가 큐에서 전송되므로 성능이 향상됩니다.

속성을 MessagePropertyFilter설정할 때 메시지를 받거나 피킹할 때 해당 속성이 검색되는지 여부만 나타냅니다. 에 대한 Message연결된 속성 값을 변경하지 않습니다.

MessagePropertyFilter 생성자는 모든 필터 속성을 부울 false값의 기본값으로 설정합니다. 정수 값 속성에 할당된 기본값은 생성자 항목을 참조하세요.

추가 정보

• MessageQueue
• MessageReadPropertyFilter
• Message