MessageQueue.Create Método

Definição

Espaço de Nomes:
System.Messaging
Assemblagem:
System.Messaging.dll

Cria uma nova fila no caminho especificado num servidor de Fila de Mensagens.

Sobrecargas

Name Description
Create(String)

Cria uma fila de Fila de Mensagens não transacional no caminho especificado.
Create(String, Boolean)

Cria uma fila de Fila de Mensagens transacional ou não transacional no caminho especificado.

Create(String)

Cria uma fila de Fila de Mensagens não transacional no caminho especificado.

public:
 static System::Messaging::MessageQueue ^ Create(System::String ^ path);
public static System.Messaging.MessageQueue Create(string path);
static member Create : string -> System.Messaging.MessageQueue
Public Shared Function Create (path As String) As MessageQueue

Parâmetros

path
String

O caminho da fila para criar.

Devoluções

MessageQueue

A MessageQueue que representa a nova fila.

Exceções

ArgumentException

O path parâmetro é null ou é uma cadeia vazia ("").

MessageQueueException

Já existe uma fila no caminho especificado.

-ou-

Ocorreu um erro ao aceder a um método de Fila de Mensagens.

Exemplos

O seguinte exemplo de código cria filas públicas e privadas. Envia uma mensagem para filas selecionadas.

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

using namespace System;
using namespace System::Messaging;

// This example creates new public and private queues.
ref class MyNewQueue
{
public:
   void CreatePublicQueues()
   {
      
      // Create and connect to a public Message Queuing queue.
      if (  !MessageQueue::Exists( ".\\newPublicQueue" ) )
      {
         
         // Create the queue if it does not exist.
         MessageQueue^ myNewPublicQueue = MessageQueue::Create( ".\\newPublicQueue" );
         
         // Send a message to the queue.
         myNewPublicQueue->Send( "My message data." );
      }

      
      // Create (but do not connect to) a second public queue.
      if (  !MessageQueue::Exists( ".\\newPublicResponseQueue" ) )
      {
         MessageQueue::Create( ".\\newPublicResponseQueue" );
      }

      return;
   }


   // Creates private queues and sends a message.
   void CreatePrivateQueues()
   {
      
      // Create and connect to a private Message Queuing queue.
      if (  !MessageQueue::Exists( ".\\Private$\\newPrivQueue" ) )
      {
         
         // Create the queue if it does not exist.
         MessageQueue^ myNewPrivateQueue = MessageQueue::Create( ".\\Private$\\newPrivQueue" );
         
         // Send a message to the queue.
         myNewPrivateQueue->Send( "My message data." );
      }

      
      // Create (but do not connect to) a second private queue.
      if (  !MessageQueue::Exists( ".\\Private$\\newResponseQueue" ) )
      {
         MessageQueue::Create( ".\\Private$\\newResponseQueue" );
      }

      return;
   }

};


// Provides an entry point into the application.
int main()
{
   
   // Create a new instance of the class.
   MyNewQueue^ myNewQueue = gcnew MyNewQueue;
   
   // Create public and private queues.
   myNewQueue->CreatePublicQueues();
   myNewQueue->CreatePrivateQueues();
   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 creates new public and private
        // queues.
        //**************************************************

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

            // Create public and private queues.
            myNewQueue.CreatePublicQueues();
            myNewQueue.CreatePrivateQueues();

            return;
        }

        //**************************************************
        // Creates public queues and sends a message.
        //**************************************************
        
        public void CreatePublicQueues()
        {

            // Create and connect to a public Message Queuing queue.
            if (!MessageQueue.Exists(".\\newPublicQueue"))
            {
                // Create the queue if it does not exist.
                MessageQueue myNewPublicQueue =
                    MessageQueue.Create(".\\newPublicQueue");

                // Send a message to the queue.
                myNewPublicQueue.Send("My message data.");
            }

            // Create (but do not connect to) a second public queue.
            if (!MessageQueue.Exists(".\\newPublicResponseQueue"))
            {
                MessageQueue.Create(".\\newPublicResponseQueue");
            }

            return;
        }

        //**************************************************
        // Creates private queues and sends a message.
        //**************************************************
        
        public void CreatePrivateQueues()
        {

            // Create and connect to a private Message Queuing queue.
            if (!MessageQueue.Exists(".\\Private$\\newPrivQueue"))
            {
                // Create the queue if it does not exist.
                MessageQueue myNewPrivateQueue =
                    MessageQueue.Create(".\\Private$\\newPrivQueue");

                // Send a message to the queue.
                myNewPrivateQueue.Send("My message data.");
            }

            // Create (but do not connect to) a second private queue.
            if (!MessageQueue.Exists(".\\Private$\\newResponseQueue"))
            {
                MessageQueue.Create(".\\Private$\\newResponseQueue");
            }
        
            return;
        }
    }
}

Imports System.Messaging

' Provides a container class for the example.

Public Class MyNewQueue


  
        ' Provides an entry point into the application.
        '		 
        ' This example creates new public and private 
        ' queues.
 

        Public Shared Sub Main()

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

            ' Create public and private queues.
            myNewQueue.CreatePublicQueues()
            myNewQueue.CreatePrivateQueues()

            Return

        End Sub


 
        ' Creates public queues and sends a message.
 

        Public Sub CreatePublicQueues()

            ' Create and connect to a public Message Queuing queue.
            If Not MessageQueue.Exists(".\newPublicQueue") Then
                ' Create the queue if it does not exist.
                Dim myNewPublicQueue As MessageQueue = _
                    MessageQueue.Create(".\newPublicQueue")

                ' Send a message to the queue.
                myNewPublicQueue.Send("My message data.")
            End If

            ' Create (but do not connect to) a second public queue.
            If Not MessageQueue.Exists(".\newPublicResponseQueue") _
                Then

                MessageQueue.Create(".\newPublicResponseQueue")
            End If

            Return

        End Sub



        ' Creates private queues and sends a message.


        Public Sub CreatePrivateQueues()

            ' Create and connect to a private Message Queuing queue.
            If Not MessageQueue.Exists(".\Private$\newPrivateQueue") _
                Then

                ' Create the queue if it does not exist.
                Dim myNewPrivateQueue As MessageQueue = _
                    MessageQueue.Create(".\Private$\newPrivateQueue")

                ' Send a message to the queue.
                myNewPrivateQueue.Send("My message data.")
            End If

            ' Create (but do not connect to) a second private queue.
            If Not MessageQueue.Exists(".\Private$\newResponseQueue") _
                Then

                MessageQueue.Create(".\Private$\newResponseQueue")
            End If

            Return

        End Sub

End Class

Observações

Use esta sobrecarga para criar uma fila de Fila de Mensagens não transacional.

Para criar uma nova instância da MessageQueue classe na sua aplicação e associá-la a uma fila existente, use o MessageQueue construtor. Para criar uma nova fila na Fila de Mensagens, ligue Create(String)para .

A sintaxe do path parâmetro depende do tipo de fila a que se refere, como mostrado na tabela seguinte.

Tipo de fila Sintaxe
Fila pública MachineName\QueueName
Fila privada MachineName\Private$\QueueName

Use "." para o computador local. Para mais sintaxe, veja a Path propriedade.

A tabela seguinte mostra se este método está disponível em vários modos de Grupo de Trabalho.

Modo de grupo de trabalho Available
Computador local Yes
Computador local e nome do formato direto Yes
Computador remoto No
Computador remoto e nome do formato direto No

Ver também

Aplica-se a

Create(String, Boolean)

Cria uma fila de Fila de Mensagens transacional ou não transacional no caminho especificado.

public:
 static System::Messaging::MessageQueue ^ Create(System::String ^ path, bool transactional);
public static System.Messaging.MessageQueue Create(string path, bool transactional);
static member Create : string * bool -> System.Messaging.MessageQueue
Public Shared Function Create (path As String, transactional As Boolean) As MessageQueue

Parâmetros

path
String

O caminho da fila para criar.

transactional
Boolean

true criar uma fila transacional; false para criar uma fila não transacional.

Devoluções

MessageQueue

A MessageQueue que representa a nova fila.

Exceções

ArgumentException

O path parâmetro é null ou é uma cadeia vazia ("").

MessageQueueException

Já existe uma fila no caminho especificado.

-ou-

Ocorreu um erro ao aceder a um método de Fila de Mensagens.

Exemplos

O seguinte exemplo de código cria filas transacionais públicas e privadas. Envia uma mensagem para filas selecionadas.

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

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

   // Creates public transactional queues and sends a 
   // message.
   void CreatePublicTransactionalQueues()
   {
      
      // Create and connect to a public message Queuing queue.
      if (  !MessageQueue::Exists( ".\\newPublicTransQueue1" ) )
      {
         
         // Create the queue if it does not exist.
         MessageQueue::Create( ".\\newPublicTransQueue1", true );
      }

      
      // Connect to the queue.
      MessageQueue^ myNewPublicQueue = gcnew MessageQueue( ".\\newPublicTransQueue1" );
      
      // Create a transaction.
      MessageQueueTransaction^ myTransaction = gcnew MessageQueueTransaction;
      
      // Begin the transaction.
      myTransaction->Begin();
      
      // Send the message.
      myNewPublicQueue->Send( "My Message Data.", myTransaction );
      
      // Commit the transaction.
      myTransaction->Commit();
      if (  !MessageQueue::Exists( ".\\newPublicTransQueue2" ) )
      {
         
         // Create (but do not connect to) second public queue
         MessageQueue::Create( ".\\newPublicTransQueue2", true );
      }

      return;
   }


   // Creates private queues and sends a message.
   void CreatePrivateTransactionalQueues()
   {
      
      // Create and connect to a private Message Queuing queue.
      if (  !MessageQueue::Exists( ".\\Private$\\newPrivTransQ1" ) )
      {
         
         // Create the queue if it does not exist.
         MessageQueue^ myNewPrivateQueue = MessageQueue::Create( ".\\Private$\\newPrivTransQ1", true );
      }

      
      // Connect to the queue.
      MessageQueue^ myNewPrivateQueue = gcnew MessageQueue( ".\\Private$\\newPrivTransQ1" );
      
      // Create a transaction.
      MessageQueueTransaction^ myTransaction = gcnew MessageQueueTransaction;
      
      // Begin the transaction.
      myTransaction->Begin();
      
      // Send the message.
      myNewPrivateQueue->Send( "My Message Data.", myTransaction );
      
      // Commit the transaction.
      myTransaction->Commit();
      
      // Create (but do not connect to) a second private queue.
      if (  !MessageQueue::Exists( ".\\Private$\\newPrivTransQ2" ) )
      {
         MessageQueue::Create( ".\\Private$\\newPrivTransQ2", true );
      }

      return;
   }

};


// Provides an entry point into the application.
// This example creates new transactional queues.
int main()
{
   
   // Create a new instance of the class.
   MyNewQueue^ myNewQueue = gcnew MyNewQueue;
   
   // Create transactional queues.
   myNewQueue->CreatePublicTransactionalQueues();
   myNewQueue->CreatePrivateTransactionalQueues();
   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 creates new transactional queues.
        //**************************************************

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

            // Create transactional queues.
            myNewQueue.CreatePublicTransactionalQueues();
            myNewQueue.CreatePrivateTransactionalQueues();

            return;
        }

        //**************************************************
        // Creates public transactional queues and sends a
        // message.
        //**************************************************
        
        public void CreatePublicTransactionalQueues()
        {

            // Create and connect to a public Message Queuing queue.
            if (!MessageQueue.Exists(".\\newPublicTransQueue1"))
            {
                // Create the queue if it does not exist.
                MessageQueue.Create(".\\newPublicTransQueue1", true);
            }

            // Connect to the queue.
            MessageQueue myNewPublicQueue =
                new MessageQueue(".\\newPublicTransQueue1");

            // Send a message to the queue.
            // Create a transaction.
            MessageQueueTransaction myTransaction = new
                MessageQueueTransaction();

            // Begin the transaction.
            myTransaction.Begin();

            // Send the message.
            myNewPublicQueue.Send("My Message Data.", myTransaction);

            // Commit the transaction.
            myTransaction.Commit();

            if (!MessageQueue.Exists(".\\newPublicTransQueue2"))
            {
                // Create (but do not connect to) second public queue.
                MessageQueue.Create(".\\newPublicTransQueue2", true);
            }

            return;
        }

        //**************************************************
        // Creates private queues and sends a message.
        //**************************************************
        
        public void CreatePrivateTransactionalQueues()
        {

            // Create and connect to a private Message Queuing queue.
            if (!MessageQueue.Exists(".\\Private$\\newPrivTransQ1"))
            {
                // Create the queue if it does not exist.
                MessageQueue.Create(".\\Private$\\newPrivTransQ1", true);
            }

            // Connect to the queue.
            MessageQueue myNewPrivateQueue =
                new MessageQueue(".\\Private$\\newPrivTransQ1");

            // Send a message to the queue.
            // Create a transaction.
            MessageQueueTransaction myTransaction = new
                MessageQueueTransaction();

            // Begin the transaction.
            myTransaction.Begin();

            // Send the message.
            myNewPrivateQueue.Send("My Message Data.", myTransaction);

            // Commit the transaction.
            myTransaction.Commit();

            // Create (but do not connect to) a second private queue.
            if (!MessageQueue.Exists(".\\Private$\\newPrivTransQ2"))
            {
                MessageQueue.Create(".\\Private$\\newPrivTransQ2",
                    true);
            }

            return;
        }
    }
}

Imports System.Messaging

Public Class MyNewQueue



        ' Provides an entry point into the application.
        '		 
        ' This example creates new transactional queues.


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

            ' Create transactional queues.
            myNewQueue.CreatePublicTransactionalQueues()
            myNewQueue.CreatePrivateTransactionalQueues()

            Return

        End Sub



        ' Creates public transactional queues and sends a 
        ' message.
 

        Public Sub CreatePublicTransactionalQueues()

            ' Create and connect to a public Message Queuing queue.
            If Not MessageQueue.Exists(".\newPublicTransQueue1") Then

                ' Create the queue if it does not exist.
                MessageQueue.Create(".\newPublicTransQueue1", True)

            End If

            ' Connect to the queue.
            Dim myNewPublicQueue As New MessageQueue(".\newPublicTransQueue1")

            ' Create a transaction.
            Dim myTransaction As New MessageQueueTransaction

            ' Begin the transaction.
            myTransaction.Begin()

            ' Send the message.
            myNewPublicQueue.Send("My Message Data.", myTransaction)

            ' Commit the transaction.
            myTransaction.Commit()

            If Not MessageQueue.Exists(".\newPublicTransQueue2") Then

                ' Create (but do not connect to) a second queue.
                MessageQueue.Create(".\newPublicTransQueue2", True)
            End If

            Return

        End Sub



        ' Creates private queues and sends a message.


        Public Sub CreatePrivateTransactionalQueues()

            ' Create and connect to a private Message Queuing queue.
            If Not MessageQueue.Exists(".\Private$\newPrivTransQ1") _
                Then

                ' Create the queue if it does not exist.
                MessageQueue.Create(".\Private$\newPrivTransQ1", True)

            End If

            ' Connect to the queue.
            Dim myNewPrivateQueue As New MessageQueue(".\Private$\newPrivTransQ1")

            ' Create a transaction.
            Dim myTransaction As New MessageQueueTransaction

            ' Begin the transaction.
            myTransaction.Begin()

            ' Send the message.
            myNewPrivateQueue.Send("My Message Data.", myTransaction)

            ' Commit the transaction.
            myTransaction.Commit()

            ' Create (but do not connect to) a second private queue.
            If Not MessageQueue.Exists(".\Private$\newPrivTransQ2") _
                Then

                MessageQueue.Create(".\Private$\newPrivTransQ2", True)
            End If

            Return

        End Sub

End Class

Observações

Pode usar esta sobrecarga para criar uma fila transacional na Fila de Mensagens. Pode criar uma fila não transacional, definindo o transactional parâmetro para false ou chamando a outra sobrecarga de Create(String).

Para criar uma nova instância da MessageQueue classe na sua aplicação e associá-la a uma fila existente, use o MessageQueue construtor. Para criar uma nova fila na Fila de Mensagens, ligue Create(String)para .

A sintaxe do path parâmetro depende do tipo de fila a que se refere, como mostrado na tabela seguinte.

Tipo de fila Sintaxe
Fila pública MachineName\QueueName
Fila privada MachineName\Private$\QueueName

Use "." para o computador local. Para mais sintaxe, veja a Path propriedade.

A tabela seguinte mostra se este método está disponível em vários modos de Grupo de Trabalho.

Modo de grupo de trabalho Available
Computador local Yes
Computador local e nome do formato direto Yes
Computador remoto No
Computador remoto e nome do formato direto No

Ver também

Aplica-se a