SoapUnknownHeader.Element Vlastnost

Definice

Obor názvů:

System.Web.Services.Protocols

Sestavení:

System.Web.Services.dll

Získá nebo nastaví XML Header element pro požadavek SOAP nebo odpověď.

public:
 property System::Xml::XmlElement ^ Element { System::Xml::XmlElement ^ get(); void set(System::Xml::XmlElement ^ value); };

public System.Xml.XmlElement Element { get; set; }

member this.Element : System.Xml.XmlElement with get, set

Public Property Element As XmlElement

Hodnota vlastnosti

XmlElement

Představuje XmlElement nezpracovaný XML hlavičky SOAP.

Příklady

Následující MyWebService webová služba XML obdrží všechny hlavičky SOAP, včetně těch jiných, než je hlavička MyHeader SOAP, o které ví. MyWebMethod Metoda webové služby XML se vrátí klientovi atributy XML poslední neznámé hlavičky SOAP předané jí jako řetězec.

<%@ 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

Poznámky

Pokud metoda webové služby XML chce zpracovat hlavičky SOAP, které neví o době zápisu webové služby XML, může zpracovat XmlElement třídu představující nezpracovaný XML hlavičky SOAP.

Viz také

• XmlElement
• SoapHeaderAttribute