MessageQueue.GetPublicQueuesByLabel メソッド

指定したラベルが設定されているネットワーク上のすべてのパブリック キューを取得します。

Public Shared Function GetPublicQueuesByLabel( _
   ByVal label As String _) As MessageQueue()
[C#]
public static MessageQueue[] GetPublicQueuesByLabel(stringlabel);
[C++]
public: static MessageQueue* GetPublicQueuesByLabel(String* label) [];
[JScript]
public static function GetPublicQueuesByLabel(
   label : String) : MessageQueue[];

パラメータ

• label
  取得するキューのセットをグループ化するラベル。

戻り値

取得したパブリック キューを参照する MessageQueue オブジェクトの配列。

例外

例外の種類	条件
MessageQueueException	メッセージ キューの API にアクセスしたときにエラーが発生しました。
ArgumentNullException	label パラメータが null 参照 (Visual Basic では Nothing) です。

解説

このメソッドを使用して、ラベルでパブリック キューをフィルタ処理します。

GetPublicQueuesByLabel は、キューの静的スナップショットを取得します。キューの動的なリストと対話するには、 GetMessageQueueEnumerator を使用します。メソッドに渡す MessageQueueCriteria の一部として、ラベルを指定できます。

このメソッドが各種のワークグループ モードで使用できるかどうかを次の表に示します。

ワークグループ モード	使用可否
ローカル コンピュータ	いいえ
ローカル コンピュータ + 直接書式名	いいえ
リモート コンピュータ	いいえ
リモート コンピュータ + 直接書式名	いいえ

使用例

[Visual Basic, C#, C++] キューの一覧を取得する例を次に示します。

 
Imports System
Imports 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 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 'Main


        '**************************************************
        ' 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 'GetQueuesByCategory


        '**************************************************
        ' 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 'GetQueuesByLabel


        '**************************************************
        ' 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 'GetQueuesByComputer


        '**************************************************
        ' 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 'GetAllPublicQueues


        '**************************************************
        ' 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 'GetPublicQueuesByCriteria


        '**************************************************
        ' 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 'GetPrivateQueues

    End Class 'MyNewQueue
End Namespace 'MyProject

[C#] 
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;
        }
    }
}

[C++] 
#using <mscorlib.dll>
#using <system.dll>
#using <system.messaging.dll>

using namespace System;
using namespace System::Messaging;
using namespace System::Collections;

__gc class MyNewQueue 
{
    // 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( 
            Guid(S" {00000000-0000-0000-0000-000000000001}"));

        // Send a broadcast message to each queue in the array.
        IEnumerator* myEnum = QueueList->GetEnumerator();
        while (myEnum->MoveNext()) 
        {
            MessageQueue* queueItem = __try_cast<MessageQueue*>(myEnum->Current);
            queueItem->Send(S"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(S"My Label");

        // Send a broadcast message to each queue in the array.
        IEnumerator* myEnum = QueueList->GetEnumerator();
        while (myEnum->MoveNext()) 
        {
            MessageQueue* queueItem = __try_cast<MessageQueue*>(myEnum->Current);

            queueItem->Send(S"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(S"MyComputer");

        // Display the paths of the queues in the list.
        IEnumerator* myEnum = QueueList->GetEnumerator();
        while (myEnum->MoveNext()) 
        {
            MessageQueue* queueItem = __try_cast<MessageQueue*>(myEnum->Current);

            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(TimeSpan(1, 0, 0, 0));
        myCriteria->ModifiedBefore = DateTime::Now;
        myCriteria->MachineName = S".";
        myCriteria->Label = S"My Queue";

        // Get a list of queues with that criteria.
        MessageQueue* QueueList[] = 
            MessageQueue::GetPublicQueues(myCriteria);

        // Display the paths of the queues in the list.
        IEnumerator* myEnum = QueueList->GetEnumerator();
        while (myEnum->MoveNext()) 
        {
            MessageQueue* queueItem = __try_cast<MessageQueue*>(myEnum->Current);

            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(S".");

        // Display the paths of the queues in the list.
        IEnumerator* myEnum = QueueList->GetEnumerator();
        while (myEnum->MoveNext()) 
        {
            MessageQueue* queueItem = __try_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 = new MyNewQueue();

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

    return 0;
}

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必要条件

プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ

.NET Framework セキュリティ:

• 直前の呼び出し元の完全信頼。このメンバは、部分的に信頼されているコードから使用することはできません。詳細の参照先 : 部分信頼コードからのライブラリの使用

参照

MessageQueue クラス | MessageQueue メンバ | System.Messaging 名前空間 | Label | GetPublicQueues | GetPublicQueuesByCategory | GetPublicQueuesByMachine | GetMessageQueueEnumerator | GetPrivateQueuesByMachine