MessageBodyMemberAttribute Classe

Definição

public ref class MessageBodyMemberAttribute : System::ServiceModel::MessageContractMemberAttribute

[System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Property, Inherited=false)]
public class MessageBodyMemberAttribute : System.ServiceModel.MessageContractMemberAttribute

[<System.AttributeUsage(System.AttributeTargets.Field | System.AttributeTargets.Property, Inherited=false)>]
type MessageBodyMemberAttribute = class
    inherit MessageContractMemberAttribute

Public Class MessageBodyMemberAttribute
Inherits MessageContractMemberAttribute

Herança

Object

Attribute

MessageContractMemberAttribute

MessageBodyMemberAttribute

Atributos

AttributeUsageAttribute

Exemplos

O exemplo de código seguinte mostra o uso de para MessageContractAttribute controlar a estrutura do envelope SOAP tanto para a mensagem de pedido como para a mensagem de resposta, e o uso de ambos MessageHeaderAttribute (para criar um cabeçalho SOAP para a mensagem de resposta) e MessageBodyMemberAttribute (para especificar os corpos tanto da mensagem de pedido como da resposta). O exemplo de código contém um exemplo de cada mensagem quando enviada.

using System;
using System.Collections.Generic;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Channels;

namespace Microsoft.WCF.Documentation
{
  [ServiceContract(Namespace = "Microsoft.WCF.Documentation")]
  interface IMessagingHello
  {
    [OperationContract(
     Action = "http://GreetingMessage/Action",
     ReplyAction = "http://HelloResponseMessage/Action"
    )]
    HelloResponseMessage Hello(HelloGreetingMessage msg);
  }

  [MessageContract]
  public class HelloResponseMessage
  {
    private string localResponse = String.Empty;
    private string extra = String.Empty;

    [MessageBodyMember(
      Name = "ResponseToGreeting",
      Namespace = "http://www.examples.com")]
    public string Response
    {
      get { return localResponse; }
      set { localResponse = value; }
    }

    [MessageHeader(
      Name = "OutOfBandData",
      Namespace = "http://www.examples.com",
      MustUnderstand=true
    )]
    public string ExtraValues
    {
      get { return extra; }
      set { this.extra = value; }
   }

   /*
    The following is the response message, edited for clarity.

    <s:Envelope>
      <s:Header>
        <a:Action s:mustUnderstand="1">http://HelloResponseMessage/Action</a:Action>
        <h:OutOfBandData s:mustUnderstand="1" xmlns:h="http://www.examples.com">Served by object 13804354.</h:OutOfBandData>
      </s:Header>
      <s:Body>
        <HelloResponseMessage xmlns="Microsoft.WCF.Documentation">
          <ResponseToGreeting xmlns="http://www.examples.com">Service received: Hello.</ResponseToGreeting>
        </HelloResponseMessage>
      </s:Body>
    </s:Envelope>
    */
 }
  [MessageContract]
  public class HelloGreetingMessage
  {
    private string localGreeting;

    [MessageBodyMember(
      Name = "Salutations",
      Namespace = "http://www.examples.com"
    )]
    public string Greeting
    {
      get { return localGreeting; }
      set { localGreeting = value; }
    }
  }

  /*
   The following is the request message, edited for clarity.

    <s:Envelope>
      <s:Header>
        <!-- Note: Some header content has been removed for clarity.
        <a:Action>http://GreetingMessage/Action</a:Action>
        <a:To s:mustUnderstand="1"></a:To>
      </s:Header>
      <s:Body u:Id="_0" xmlns:u="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
        <HelloGreetingMessage xmlns="Microsoft.WCF.Documentation">
          <Salutations xmlns="http://www.examples.com">Hello.</Salutations>
        </HelloGreetingMessage>
      </s:Body>
   </s:Envelope>
   */

  class MessagingHello : IMessagingHello
  {
    public HelloResponseMessage Hello(HelloGreetingMessage msg)
    {
      Console.WriteLine("Caller sent: " + msg.Greeting);
      HelloResponseMessage responseMsg = new HelloResponseMessage();
      responseMsg.Response = "Service received: " + msg.Greeting;
      responseMsg.ExtraValues = String.Format("Served by object {0}.", this.GetHashCode().ToString());
      Console.WriteLine("Returned response message.");
      return responseMsg;
    }
  }
}

Imports System.Runtime.Serialization
Imports System.ServiceModel
Imports System.ServiceModel.Channels

Namespace Microsoft.WCF.Documentation
  <ServiceContract(Namespace := "Microsoft.WCF.Documentation")> _
  Friend Interface IMessagingHello
    <OperationContract(Action := "http://GreetingMessage/Action", ReplyAction := "http://HelloResponseMessage/Action")> _
    Function Hello(ByVal msg As HelloGreetingMessage) As HelloResponseMessage
  End Interface

  <MessageContract> _
  Public Class HelloResponseMessage
    Private localResponse As String = String.Empty
    Private extra As String = String.Empty

    <MessageBodyMember(Name := "ResponseToGreeting", Namespace := "http://www.examples.com")> _
    Public Property Response() As String
      Get
          Return localResponse
      End Get
      Set(ByVal value As String)
          localResponse = value
      End Set
    End Property

    <MessageHeader(Name := "OutOfBandData", Namespace := "http://www.examples.com", MustUnderstand:=True)> _
    Public Property ExtraValues() As String
      Get
          Return extra
      End Get
      Set(ByVal value As String)
          Me.extra = value
      End Set
    End Property

'   
'    The following is the response message, edited for clarity.
'    
'    <s:Envelope>
'      <s:Header>
'        <a:Action s:mustUnderstand="1">http://HelloResponseMessage/Action</a:Action>
'        <h:OutOfBandData s:mustUnderstand="1" xmlns:h="http://www.examples.com">Served by object 13804354.</h:OutOfBandData>
'      </s:Header>
'      <s:Body>
'        <HelloResponseMessage xmlns="Microsoft.WCF.Documentation">
'          <ResponseToGreeting xmlns="http://www.examples.com">Service received: Hello.</ResponseToGreeting>
'      </s:Body>    
'    </s:Envelope>
'    
  End Class
  <MessageContract> _
  Public Class HelloGreetingMessage
    Private localGreeting As String

    <MessageBodyMember(Name := "Salutations", Namespace := "http://www.examples.com")> _
    Public Property Greeting() As String
      Get
          Return localGreeting
      End Get
      Set(ByVal value As String)
          localGreeting = value
      End Set
    End Property
  End Class

'  
'   The following is the request message, edited for clarity.
'    
'    <s:Envelope>
'      <s:Header>
'        <!-- Note: Some header content has been removed for clarity.
'        <a:Action>http://GreetingMessage/Action</a:Action> 
'        <a:To s:mustUnderstand="1"></a:To>
'      </s:Header>
'      <s:Body u:Id="_0" xmlns:u="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd">
'        <HelloGreetingMessage xmlns="Microsoft.WCF.Documentation">
'          <Salutations xmlns="http://www.examples.com">Hello.</Salutations>
'      </s:Body>
'   </s:Envelope>
'   

  Friend Class MessagingHello
      Implements IMessagingHello
    Public Function Hello(ByVal msg As HelloGreetingMessage) As HelloResponseMessage Implements IMessagingHello.Hello
      Console.WriteLine("Caller sent: " & msg.Greeting)
      Dim responseMsg As New HelloResponseMessage()
      responseMsg.Response = "Service received: " & msg.Greeting
      responseMsg.ExtraValues = String.Format("Served by object {0}.", Me.GetHashCode().ToString())
      Console.WriteLine("Returned response message.")
      Return responseMsg
    End Function
  End Class
End Namespace

Observações

Use o MessageBodyMemberAttribute atributo para especificar que um membro de dados está serializado no corpo SOAP e para controlar alguns itens de serialização.

A Order propriedade é usada para especificar a ordem das partes do corpo nos casos em que a ordem alfabética padrão não é adequada.

As outras propriedades são herdadas da classe base, System.ServiceModel.MessageContractMemberAttribute.

Para mais informações sobre como controlar a serialização do conteúdo de um corpo SOAP sem modificar o envelope SOAP predefinido, veja System.Runtime.Serialization.DataContractAttribute, Especificar Transferência de Dados em Contratos de Serviço e Utilização de Contratos de Dados.

Para obter mais informações, consulte Usando contratos de mensagem.