MessageQueue.GetPublicQueuesByCategory(Guid) Método

Referencia

Definición

Espacio de nombres:: System.Messaging

Ensamblado:: System.Messaging.dll

Importante

Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.

Recupera todas las colas públicas de la red que pertenezcan a la categoría especificada.

public:
 static cli::array <System::Messaging::MessageQueue ^> ^ GetPublicQueuesByCategory(Guid category);

public static System.Messaging.MessageQueue[] GetPublicQueuesByCategory (Guid category);

static member GetPublicQueuesByCategory : Guid -> System.Messaging.MessageQueue[]

Public Shared Function GetPublicQueuesByCategory (category As Guid) As MessageQueue()

Parámetros

category: Guid

Guid que agrupa el conjunto de colas que se van a recuperar.

Devoluciones

MessageQueue[]

Matriz de objetos MessageQueue que hacen referencia a las colas públicas recuperadas.

Excepciones

MessageQueueException

Error al obtener acceso a un método de Message Queuing.

Ejemplos

En el ejemplo de código siguiente se recuperan listas de colas.

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

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

   // Gets a list of queues with a specified category.
   // Sends a broadcast message to all queues in that
   // category.
   void GetQueuesByCategory()
   {
      
      // Get a list of queues with the specified category.
      array<MessageQueue^>^QueueList = MessageQueue::GetPublicQueuesByCategory( Guid(" {00000000-0000-0000-0000-000000000001}") );
      
      // Send a broadcast message to each queue in the array.
      IEnumerator^ myEnum = QueueList->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         MessageQueue^ queueItem = safe_cast<MessageQueue^>(myEnum->Current);
         queueItem->Send( "Broadcast message." );
      }

      return;
   }


   // Gets a list of queues with a specified label.
   // Sends a broadcast message to all queues with that
   // label.
   void GetQueuesByLabel()
   {
      
      // Get a list of queues with the specified label.
      array<MessageQueue^>^QueueList = MessageQueue::GetPublicQueuesByLabel( "My Label" );
      
      // Send a broadcast message to each queue in the array.
      IEnumerator^ myEnum = QueueList->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         MessageQueue^ queueItem = safe_cast<MessageQueue^>(myEnum->Current);
         queueItem->Send( "Broadcast message." );
      }

      return;
   }


   // Gets a list of queues on a specified computer. 
   // Displays the list on screen.
   void GetQueuesByComputer()
   {
      
      // Get a list of queues on the specified computer.
      array<MessageQueue^>^QueueList = MessageQueue::GetPublicQueuesByMachine( "MyComputer" );
      
      // Display the paths of the queues in the list.
      IEnumerator^ myEnum = QueueList->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         MessageQueue^ queueItem = safe_cast<MessageQueue^>(myEnum->Current);
         Console::WriteLine( queueItem->Path );
      }

      return;
   }


   // Gets a list of all public queues.
   void GetAllPublicQueues()
   {
      
      // Get a list of public queues.
      array<MessageQueue^>^QueueList = MessageQueue::GetPublicQueues();
      return;
   }


   // Gets a list of all public queues that match 
   // specified criteria. Displays the list on 
   // screen.
   void GetPublicQueuesByCriteria()
   {
      
      // Define criteria to filter the queues.
      MessageQueueCriteria^ myCriteria = gcnew MessageQueueCriteria;
      myCriteria->CreatedAfter = DateTime::Now.Subtract( TimeSpan(1,0,0,0) );
      myCriteria->ModifiedBefore = DateTime::Now;
      myCriteria->MachineName = ".";
      myCriteria->Label = "My Queue";
      
      // Get a list of queues with that criteria.
      array<MessageQueue^>^QueueList = MessageQueue::GetPublicQueues( myCriteria );
      
      // Display the paths of the queues in the list.
      IEnumerator^ myEnum = QueueList->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         MessageQueue^ queueItem = safe_cast<MessageQueue^>(myEnum->Current);
         Console::WriteLine( queueItem->Path );
      }

      return;
   }


   // Gets a list of private queues on the local 
   // computer. Displays the list on screen.
   void GetPrivateQueues()
   {
      
      // Get a list of queues with the specified category.
      array<MessageQueue^>^QueueList = MessageQueue::GetPrivateQueuesByMachine( "." );
      
      // Display the paths of the queues in the list.
      IEnumerator^ myEnum = QueueList->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         MessageQueue^ queueItem = safe_cast<MessageQueue^>(myEnum->Current);
         Console::WriteLine( queueItem->Path );
      }

      return;
   }

};


// Provides an entry point into the application.
// This example gets lists of queues by a variety
// of criteria.
int main()
{
   
   // Create a new instance of the class.
   MyNewQueue^ myNewQueue = gcnew MyNewQueue;
   
   // Send normal and high priority messages.
   myNewQueue->GetQueuesByCategory();
   myNewQueue->GetQueuesByLabel();
   myNewQueue->GetQueuesByComputer();
   myNewQueue->GetAllPublicQueues();
   myNewQueue->GetPublicQueuesByCriteria();
   myNewQueue->GetPrivateQueues();
   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 gets lists of queues by a variety
        // of criteria.
        //**************************************************

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

            // Send normal and high priority messages.
            myNewQueue.GetQueuesByCategory();
            myNewQueue.GetQueuesByLabel();
            myNewQueue.GetQueuesByComputer();
            myNewQueue.GetAllPublicQueues();
            myNewQueue.GetPublicQueuesByCriteria();
            myNewQueue.GetPrivateQueues();
                        
            return;
        }

        //**************************************************
        // Gets a list of queues with a specified category.
        // Sends a broadcast message to all queues in that
        // category.
        //**************************************************
        
        public void GetQueuesByCategory()
        {
            // Get a list of queues with the specified category.
            MessageQueue[] QueueList =
                MessageQueue.GetPublicQueuesByCategory(new
                Guid("{00000000-0000-0000-0000-000000000001}"));

            // Send a broadcast message to each queue in the array.
            foreach(MessageQueue queueItem in QueueList)
            {
                queueItem.Send("Broadcast message.");
            }
            
            return;
        }

        //**************************************************
        // Gets a list of queues with a specified label.
        // Sends a broadcast message to all queues with that
        // label.
        //**************************************************
        
        public void GetQueuesByLabel()
        {
            // Get a list of queues with the specified label.
            MessageQueue[] QueueList =
                MessageQueue.GetPublicQueuesByLabel("My Label");

            // Send a broadcast message to each queue in the array.
            foreach(MessageQueue queueItem in QueueList)
            {
                queueItem.Send("Broadcast message.");
            }
            
            return;
        }

        //**************************************************
        // Gets a list of queues on a specified computer.
        // Displays the list on screen.
        //**************************************************
        
        public void GetQueuesByComputer()
        {
            // Get a list of queues on the specified computer.
            MessageQueue[] QueueList =
                MessageQueue.GetPublicQueuesByMachine("MyComputer");

            // Display the paths of the queues in the list.
            foreach(MessageQueue queueItem in QueueList)
            {
                Console.WriteLine(queueItem.Path);
            }

            return;
        }

        //**************************************************
        // Gets a list of all public queues.
        //**************************************************
        
        public void GetAllPublicQueues()
        {
            // Get a list of public queues.
            MessageQueue[] QueueList =
                MessageQueue.GetPublicQueues();
    
            return;
        }

        //**************************************************
        // Gets a list of all public queues that match
        // specified criteria. Displays the list on
        // screen.
        //**************************************************
        
        public void GetPublicQueuesByCriteria()
        {
            // Define criteria to filter the queues.
            MessageQueueCriteria myCriteria = new
                MessageQueueCriteria();
            myCriteria.CreatedAfter = DateTime.Now.Subtract(new
                TimeSpan(1,0,0,0));
            myCriteria.ModifiedBefore = DateTime.Now;
            myCriteria.MachineName = ".";
            myCriteria.Label = "My Queue";
            
            // Get a list of queues with that criteria.
            MessageQueue[] QueueList =
                MessageQueue.GetPublicQueues(myCriteria);

            // Display the paths of the queues in the list.
            foreach(MessageQueue queueItem in QueueList)
            {
                Console.WriteLine(queueItem.Path);
            }

            return;
        }

        //**************************************************
        // Gets a list of private queues on the local
        // computer. Displays the list on screen.
        //**************************************************
        
        public void GetPrivateQueues()
        {
            // Get a list of queues with the specified category.
            MessageQueue[] QueueList =
                MessageQueue.GetPrivateQueuesByMachine(".");

            // Display the paths of the queues in the list.
            foreach(MessageQueue queueItem in QueueList)
            {
                Console.WriteLine(queueItem.Path);
            }
            
            return;
        }
    }
}

Imports System.Messaging

Public Class MyNewQueue


        
        ' Provides an entry point into the application.
        '		 
        ' This example gets lists of queues by a variety
        ' of criteria.


        Public Shared Sub Main()

            ' Create a new instance of the class.
            Dim myNewQueue As New MyNewQueue()

            ' Send normal and high priority messages.
            myNewQueue.GetQueuesByCategory()
            myNewQueue.GetQueuesByLabel()
            myNewQueue.GetQueuesByComputer()
            myNewQueue.GetAllPublicQueues()
            myNewQueue.GetPublicQueuesByCriteria()
            myNewQueue.GetPrivateQueues()

            Return

        End Sub



        ' Gets a list of queues with a specified category.
        ' Sends a broadcast message to all queues in that
        ' category.
 
        Public Sub GetQueuesByCategory()

            ' Get a list of queues with the specified category.
            Dim QueueList As MessageQueue() = _
                MessageQueue.GetPublicQueuesByCategory(New _
                Guid("{00000000-0000-0000-0000-000000000001}"))

            ' Send a broadcast message to each queue in the array.
            Dim queueItem As MessageQueue
            For Each queueItem In QueueList
                queueItem.Send("Broadcast message.")
            Next queueItem

            Return

        End Sub



        ' Gets a list of queues with a specified label.
        ' Sends a broadcast message to all queues with that
        ' label.


        Public Sub GetQueuesByLabel()

            ' Get a list of queues with the specified label.
            Dim QueueList As MessageQueue() = _
                MessageQueue.GetPublicQueuesByLabel("My Label")

            ' Send a broadcast message to each queue in the array.
            Dim queueItem As MessageQueue
            For Each queueItem In QueueList
                queueItem.Send("Broadcast message.")
            Next queueItem

            Return

        End Sub



        ' Gets a list of queues on a specified computer. 
        ' Displays the list on screen.
 

        Public Sub GetQueuesByComputer()

            ' Get a list of queues on the specified computer.
            Dim QueueList As MessageQueue() = _
                MessageQueue.GetPublicQueuesByMachine("MyComputer")

            ' Display the paths of the queues in the list.
            Dim queueItem As MessageQueue
            For Each queueItem In QueueList
                Console.WriteLine(queueItem.Path)
            Next queueItem

            Return

        End Sub



        ' Gets a list of all public queues.
       

        Public Sub GetAllPublicQueues()

            ' Get a list of public queues.
            Dim QueueList As MessageQueue() = _
                MessageQueue.GetPublicQueues()

            Return

        End Sub


 
        ' Gets a list of all public queues that match 
        ' specified criteria. Displays the list on 
        ' screen.


        Public Sub GetPublicQueuesByCriteria()

            ' Define criteria to filter the queues.
            Dim myCriteria As New MessageQueueCriteria()
            myCriteria.CreatedAfter = DateTime.Now.Subtract(New _
                TimeSpan(1, 0, 0, 0))
            myCriteria.ModifiedBefore = DateTime.Now
            myCriteria.MachineName = "."
            myCriteria.Label = "My Queue"

            ' Get a list of queues with that criteria.
            Dim QueueList As MessageQueue() = _
                MessageQueue.GetPublicQueues(myCriteria)

            ' Display the paths of the queues in the list.
            Dim queueItem As MessageQueue
            For Each queueItem In QueueList
                Console.WriteLine(queueItem.Path)
            Next queueItem

            Return

        End Sub


 
        ' Gets a list of private queues on the local 
        ' computer. Displays the list on screen.
  

        Public Sub GetPrivateQueues()

            ' Get a list of queues with the specified category.
            Dim QueueList As MessageQueue() = _
                MessageQueue.GetPrivateQueuesByMachine(".")

            ' Display the paths of the queues in the list.
            Dim queueItem As MessageQueue
            For Each queueItem In QueueList
                Console.WriteLine(queueItem.Path)
            Next queueItem

            Return

        End Sub

End Class

Comentarios

Use este método para filtrar las colas públicas por categoría. La Category propiedad proporciona acceso a la propiedad id. de tipo Message Queuing (que es de lectura y escritura) de una cola determinada. Aunque puede usar NewGuid para crear un valor de categoría único en todos los Guid valores, no es necesario. El valor de categoría solo debe ser distinto de otras categorías, no de todos los demás Guid valores. Por ejemplo, puede asignar {00000000-0000-0000-0000-000000000001} como para Category un conjunto de colas y {00000000-0000-0000-0000-000000000002} como para Category otro conjunto.

GetPublicQueuesByCategory(Guid) recupera una instantánea estática de las colas. Para interactuar con una lista dinámica de las colas, use GetMessageQueueEnumerator. Puede especificar la categoría como parte del MessageQueueCriteria elemento que pasa al método .

En la tabla siguiente se muestra si este método está disponible en varios modos de grupo de trabajo.

Modo de grupo de trabajo	Disponible
Equipo local	No
Equipo local y nombre de formato directo	No
Equipo remoto	No
Equipo remoto y nombre de formato directo	No

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