MessageQueue.GetPublicQueuesByLabel(String) Methode

  • Referenz

Definition

Namespace:
System.Messaging
Assembly:
System.Messaging.dll

Ruft alle öffentlichen Warteschlangen im Netzwerk ab, die die angegebene Bezeichnung aufweisen.

public:
 static cli::array <System::Messaging::MessageQueue ^> ^ GetPublicQueuesByLabel(System::String ^ label);
public static System.Messaging.MessageQueue[] GetPublicQueuesByLabel (string label);
static member GetPublicQueuesByLabel : string -> System.Messaging.MessageQueue[]
Public Shared Function GetPublicQueuesByLabel (label As String) As MessageQueue()

Parameter

label
String

Eine Bezeichnung zum Gruppieren der Gruppe von abzurufenden Warteschlangen.

Gibt zurück

MessageQueue[]

Ein Array von MessageQueue-Objekten, die auf die abgerufenen öffentlichen Warteschlangen verweisen.

Ausnahmen

MessageQueueException

Fehler beim Zugriff auf eine Message Queuing-Methode.

ArgumentNullException

Der label-Parameter ist null.

Beispiele

Im folgenden Codebeispiel werden Listen von Warteschlangen abgerufen.

#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

Hinweise

Verwenden Sie diese Methode, um die öffentlichen Warteschlangen nach Bezeichnung zu filtern.

GetPublicQueuesByLabel(String)ruft eine statische Momentaufnahme der Warteschlangen ab. Verwenden Sie GetMessageQueueEnumerator, um mit einer dynamischen Liste der Warteschlangen zu interagieren. Sie können die Bezeichnung als Teil der angeben, die MessageQueueCriteria Sie an die -Methode übergeben.

Die folgende Tabelle zeigt, ob diese Methode in verschiedenen Arbeitsgruppenmodi verfügbar ist.

Arbeitsgruppenmodus Verfügbar
Lokalem Computer Nein
Name des lokalen Computers und direktes Format Nein
Remotecomputer Nein
Name des Remotecomputers und des direkten Formats Nein

Gilt für:

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