SoapUnknownHeader Classe

Definição

public ref class SoapUnknownHeader sealed : System::Web::Services::Protocols::SoapHeader

public sealed class SoapUnknownHeader : System.Web.Services.Protocols.SoapHeader

type SoapUnknownHeader = class
    inherit SoapHeader

Public NotInheritable Class SoapUnknownHeader
Inherits SoapHeader

Herança

Object

SoapHeader

SoapUnknownHeader

Exemplos

O MyWebService serviço Web XML aceita e processa o MyHeader cabeçalho SOAP enviado com quaisquer chamadas ao MyWebMethod método do serviço Web XML. Além disso, MyWebMethod recebe quaisquer cabeçalhos SOAP que não sejam o MyHeader cabeçalho SOAP.

<%@ WebService Language="C#" Class="MyWebService"%>
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Xml;
using System;

// Define a SOAP header by deriving from the SoapHeader base class.

public class MyHeader : SoapHeader {
    public string MyValue;
}

public class MyWebService {

    public MyHeader myHeader;
    // Receive all SOAP headers besides the MyHeader SOAP header.
    public SoapUnknownHeader[] unknownHeaders;
 
    [WebMethod]
    [SoapHeader("myHeader", Direction=SoapHeaderDirection.InOut)]

    //Receive any SOAP headers other than MyHeader.
    [SoapHeader("unknownHeaders")]

    public string MyWebMethod() {

    string unknownHeaderAttributes = String.Empty;

        // Set myHeader.MyValue to some value.
         
       foreach (SoapUnknownHeader header in unknownHeaders) {
           // Perform some processing on the header.
           foreach (XmlAttribute attribute in header.Element.Attributes) {
              unknownHeaderAttributes = unknownHeaderAttributes + attribute.Name + ":" + attribute.Value + ";";            
           }
           // For those headers that cannot be 
           // processed, set the DidUnderstand property to false.
           header.DidUnderstand = false;
       }
       return unknownHeaderAttributes;
    }
}

<%@ WebService Language="VB" Class="MyWebService"%>
Imports System.Web.Services
Imports System.Web.Services.Protocols
Imports System.Xml
Imports System

' Define a SOAP header by deriving from the SoapHeader base class.
Public Class MyHeader
    Inherits SoapHeader
    Public MyValue As String
End Class

Public Class MyWebService
    
    Public myHeader As MyHeader
    
    ' Receive all SOAP headers besides the MyHeader SOAP header.
    Public unknownHeaders() As SoapUnknownHeader    

    'Receive any SOAP headers other than MyHeader.
    <WebMethod, _
    SoapHeader("myHeader", Direction := SoapHeaderDirection.InOut), _
    SoapHeader("unknownHeaders")> _
    Public Function MyWebMethod() As String
        Dim unknownHeaderAttributes As String = String.Empty
        
        ' Set myHeader.MyValue to some value.
        Dim header As SoapUnknownHeader
        For Each header In  unknownHeaders
            ' Perform some processing on the header.
            Dim attribute As XmlAttribute
            For Each attribute In header.Element.Attributes
                unknownHeaderAttributes &= attribute.Name & ":" & _
                    attribute.Value & ";"
            Next attribute
            ' For those headers that cannot be 
            ' processed, set the DidUnderstand property to false.
            header.DidUnderstand = False
        Next header
        
        Return unknownHeaderAttributes
        
    End Function
End Class

Observações

Um cliente SOAP pode invocar um serviço Web XML com dados adicionais para além dos parâmetros necessários, sob a forma de um cabeçalho SOAP. Um serviço Web XML criado usando ASP.NET ou um cliente de serviço Web XML pode visualizar quaisquer cabeçalhos SOAP que desconhecesse na altura em que o serviço Web XML foi escrito, aplicando um SoapHeaderAttribute com uma propriedade MemberName de um array de SoapHeader, SoapHeader, SoapUnknownHeader ou um array de SoapUnknownHeader ao método do serviço Web XML. Especificar um Type de SoapUnknownHeader, permite que o serviço Web XML veja o conteúdo do cabeçalho SOAP na forma de um XmlElement.

Ver também

• SoapHeaderAttribute
• SoapHeader