XmlTypeMapping-Klasse

Enthält eine Zuordnung eines Typs zu einem anderen.

Namespace: System.Xml.Serialization
Assembly: System.Xml (in system.xml.dll)

Syntax

'Declaration
Public Class XmlTypeMapping
    Inherits XmlMapping
'Usage
Dim instance As XmlTypeMapping

public class XmlTypeMapping : XmlMapping

public ref class XmlTypeMapping : public XmlMapping

public class XmlTypeMapping extends XmlMapping

public class XmlTypeMapping extends XmlMapping

Hinweise

Die XmlTypeMapping-Klasse wird zum Serialisieren eines Objekts als codiertes SOAP-XML verwendet. Das resultierende XML entspricht Abschnitt 5 des Dokuments "Simple Object Access Protocol (SOAP) 1.1" des World Wide Web Consortium (www.w3.org). Erstellen Sie eine XmlTypeMapping durch Aufrufen der ImportTypeMapping-Methode der SoapReflectionImporter-Klasse. Erstellen Sie unter Verwendung von XmlTypeMapping eine Instanz der XmlSerializer-Klasse. Mit einem der in Attribute für die Steuerung der Serialisierung von codiertem SOAP aufgeführten Attribute können Sie die Serialisierung steuern.

Beispiel

Im folgenden Beispiel wird eine Instanz der Klasse Transportation serialisiert, die das Feld Vehicle enthält. Auf das Feld wird ein SoapElementAttribute angewendet. Nach der Serialisierung des Felds lautet der Name des XML-Elements "Wheels" anstelle von "Vehicle". Die SerializeOverride-Methode erstellt ein SoapElementAttribute und legt die SoapElement-Eigenschaft eines SoapAttributes auf das SoapElementAttribute fest. Das SoapAttributes wird einem SoapAttributeOverrides hinzugefügt, mit dem eine XmlTypeMapping erstellt wird. Ein XmlSerializer wird mit der XmlTypeMapping erstellt, und eine Instanz der Transportation-Klasse wird erneut serialisiert. Da das SoapElementAttribute zum Überschreiben der Serialisierung verwendet wird, lautet der Name des generierten XML-Elements nun "Truck" anstelle von "Wheels".

Imports System
Imports System.IO
Imports System.Xml.Serialization
Imports System.Collections
Imports System.Xml
Imports System.Text
Public Class Transportation
   ' The SoapElementAttribute specifies that the
   ' generated XML element name will be "Wheels"
   ' instead of "Vehicle".
   <SoapElement("Wheels")> Public Vehicle As String 
   <SoapElement(DataType:= "dateTime")> _
   public CreationDate As DateTime    
   <SoapElement(IsNullable:= true)> _
   public thing As Thing
End Class

Public Class Thing
   <SoapElement(IsNullable:=true)> public ThingName As string 
End Class

Public Class Test

   Shared Sub Main()
      Dim t As Test = New Test()
      t.SerializeObject("SoapElementOriginalVb.xml")
      t.SerializeOverride("SoapElementOverrideVb.xml")
      Console.WriteLine("Finished writing two XML files.")
   End Sub

   ' Return an XmlSerializer used for overriding.
   Public Function CreateSoapOverrider() As XmlSerializer 
      ' Create the SoapAttributes and SoapAttributeOverrides objects.
      Dim soapAttrs As SoapAttributes = New SoapAttributes()

      Dim soapOverrides As SoapAttributeOverrides = _
      New SoapAttributeOverrides()
            
      ' Create a SoapElementAttribute to override 
      ' the Vehicles property. 
      Dim soapElement1 As SoapElementAttribute = _
      New SoapElementAttribute("Truck")
      ' Set the SoapElement to the object.
      soapAttrs.SoapElement= soapElement1

      ' Add the SoapAttributes to the SoapAttributeOverrides,
      ' specifying the member to override. 
      soapOverrides.Add(GetType(Transportation), "Vehicle", soapAttrs)
      
      ' Create the XmlSerializer, and return it.
      Dim myTypeMapping As XmlTypeMapping = (New _
      SoapReflectionImporter (soapOverrides)).ImportTypeMapping _
      (GetType(Transportation))
      return New XmlSerializer(myTypeMapping)
   End Function

   Public Sub SerializeOverride(filename As String)
      ' Create an XmlSerializer instance.
      Dim ser As XmlSerializer = CreateSoapOverrider()

      ' Create the object and serialize it.
      Dim myTransportation As Transportation = _
      New Transportation()

      myTransportation.Vehicle = "MyCar"
      myTransportation.CreationDate = DateTime.Now
      myTransportation.thing= new Thing()
      
      Dim writer As XmlTextWriter = _
      New XmlTextWriter(filename, Encoding.UTF8)
      writer.Formatting = Formatting.Indented
      writer.WriteStartElement("wrapper")
      ser.Serialize(writer, myTransportation)
      writer.WriteEndElement()
      writer.Close()
   End Sub

   Public Sub SerializeObject(filename As String)
      ' Create an XmlSerializer instance.
      Dim ser As XmlSerializer = _
      New XmlSerializer(GetType(Transportation))
      
      Dim myTransportation As Transportation = _
      New Transportation()
      
      myTransportation.Vehicle = "MyCar"
      myTransportation.CreationDate=DateTime.Now
      myTransportation.thing= new Thing()

      Dim writer As XmlTextWriter = _
      new XmlTextWriter(filename, Encoding.UTF8)
      writer.Formatting = Formatting.Indented
      writer.WriteStartElement("wrapper")
      ser.Serialize(writer, myTransportation)
      writer.WriteEndElement()
      writer.Close()
   End Sub
End Class

using System;
using System.IO;
using System.Xml.Serialization;
using System.Collections;
using System.Xml;
using System.Text;
public class Transportation
{
   // The SoapElementAttribute specifies that the
   // generated XML element name will be "Wheels"
   // instead of "Vehicle".
   [SoapElement("Wheels")]
   public string Vehicle;
   [SoapElement(DataType = "dateTime")]
   public DateTime CreationDate;
   [SoapElement(IsNullable = true)]
   public Thing thing;
   
}

public class Thing{ 
   [SoapElement(IsNullable=true)] public string ThingName;
}

public class Test
{
   public static void Main()
   {
      Test t = new Test();
      t.SerializeObject("SoapElementOriginal.xml");
      t.SerializeOverride("SoapElementOverride.xml");
      Console.WriteLine("Finished writing two XML files.");
   }

   // Return an XmlSerializer used for overriding.
   public XmlSerializer CreateSoapOverrider()
   {
      // Create the SoapAttributes and SoapAttributeOverrides objects.
      SoapAttributes soapAttrs = new SoapAttributes();

      SoapAttributeOverrides soapOverrides = 
      new SoapAttributeOverrides();
            
      /* Create an SoapElementAttribute to override 
      the Vehicles property. */
      SoapElementAttribute soapElement1 = 
      new SoapElementAttribute("Truck");
      // Set the SoapElement to the object.
      soapAttrs.SoapElement= soapElement1;

      /* Add the SoapAttributes to the SoapAttributeOverrides,
      specifying the member to override. */
      soapOverrides.Add(typeof(Transportation), "Vehicle", soapAttrs);
      
      // Create the XmlSerializer, and return it.
      XmlTypeMapping myTypeMapping = (new SoapReflectionImporter
      (soapOverrides)).ImportTypeMapping(typeof(Transportation));
      return new XmlSerializer(myTypeMapping);
   }

   public void SerializeOverride(string filename)
   {
      // Create an XmlSerializer instance.
      XmlSerializer ser = CreateSoapOverrider();

      // Create the object and serialize it.
      Transportation myTransportation = 
      new Transportation();

      myTransportation.Vehicle = "MyCar";
      myTransportation.CreationDate=DateTime.Now;
      myTransportation.thing = new Thing();

      XmlTextWriter writer = 
      new XmlTextWriter(filename, Encoding.UTF8);
      writer.Formatting = Formatting.Indented;
      writer.WriteStartElement("wrapper");
      ser.Serialize(writer, myTransportation);
      writer.WriteEndElement();
      writer.Close();
   }
   public void SerializeObject(string filename){
      // Create an XmlSerializer instance.
      XmlSerializer ser = new XmlSerializer(typeof(Transportation));
      Transportation myTransportation = 
      new Transportation();
      myTransportation.Vehicle = "MyCar";
      myTransportation.CreationDate = DateTime.Now;
      myTransportation.thing = new Thing();
      XmlTextWriter writer = 
      new XmlTextWriter(filename, Encoding.UTF8);
      writer.Formatting = Formatting.Indented;
      writer.WriteStartElement("wrapper");
      ser.Serialize(writer, myTransportation);
      writer.WriteEndElement();
      writer.Close();
   }
}

#using <System.Xml.dll>
#using <System.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml::Serialization;
using namespace System::Collections;
using namespace System::Xml;
using namespace System::Text;
public ref class Thing
{
public:

   [SoapElement(IsNullable=true)]
   String^ ThingName;
};

public ref class Transportation
{
public:

   // The SoapElementAttribute specifies that the
   // generated XML element name will be S"Wheels"
   // instead of S"Vehicle".

   [SoapElement("Wheels")]
   String^ Vehicle;

   [SoapElement(DataType="dateTime")]
   DateTime CreationDate;

   [SoapElement(IsNullable=true)]
   Thing^ thing;
};

public ref class Test
{
public:

   // Return an XmlSerializer used for overriding.
   XmlSerializer^ CreateSoapOverrider()
   {
      // Create the SoapAttributes and SoapAttributeOverrides objects.
      SoapAttributes^ soapAttrs = gcnew SoapAttributes;
      SoapAttributeOverrides^ soapOverrides = gcnew SoapAttributeOverrides;

      // Create an SoapElementAttribute to the Vehicles property.
      SoapElementAttribute^ soapElement1 = gcnew SoapElementAttribute( "Truck" );

      // Set the SoapElement to the Object*.
      soapAttrs->SoapElement = soapElement1;

      // Add the SoapAttributes to the SoapAttributeOverrides,specifying the member to.
      soapOverrides->Add( Transportation::typeid, "Vehicle", soapAttrs );

      // Create the XmlSerializer, and return it.
      XmlTypeMapping^ myTypeMapping = (gcnew SoapReflectionImporter( soapOverrides ))->ImportTypeMapping( Transportation::typeid );
      return gcnew XmlSerializer( myTypeMapping );
   }

   void SerializeOverride( String^ filename )
   {
      // Create an XmlSerializer instance.
      XmlSerializer^ ser = CreateSoapOverrider();

      // Create the Object* and serialize it.
      Transportation^ myTransportation = gcnew Transportation;
      myTransportation->Vehicle = "MyCar";
      myTransportation->CreationDate = DateTime::Now;
      myTransportation->thing = gcnew Thing;
      XmlTextWriter^ writer = gcnew XmlTextWriter( filename,Encoding::UTF8 );
      writer->Formatting = Formatting::Indented;
      writer->WriteStartElement( "wrapper" );
      ser->Serialize( writer, myTransportation );
      writer->WriteEndElement();
      writer->Close();
   }

   void SerializeObject( String^ filename )
   {
      // Create an XmlSerializer instance.
      XmlSerializer^ ser = gcnew XmlSerializer( Transportation::typeid );
      Transportation^ myTransportation = gcnew Transportation;
      myTransportation->Vehicle = "MyCar";
      myTransportation->CreationDate = DateTime::Now;
      myTransportation->thing = gcnew Thing;
      XmlTextWriter^ writer = gcnew XmlTextWriter( filename,Encoding::UTF8 );
      writer->Formatting = Formatting::Indented;
      writer->WriteStartElement( "wrapper" );
      ser->Serialize( writer, myTransportation );
      writer->WriteEndElement();
      writer->Close();
   }
};

int main()
{
   Test^ t = gcnew Test;
   t->SerializeObject( "SoapElementOriginal.xml" );
   t->SerializeOverride( "SoapElementOverride.xml" );
   Console::WriteLine( "Finished writing two XML files." );
}

import System.*;
import System.IO.*;
import System.Xml.Serialization.*;
import System.Collections.*;
import System.Xml.*;
import System.Text.*;

public class Transportation
{
    // The SoapElementAttribute specifies that the
    // generated XML element name will be "Wheels"
    // instead of "Vehicle".
    /** @attribute SoapElement("Wheels")
     */
    public String vehicle;
    /** @attribute SoapElement(DataType = "dateTime")
     */
    public DateTime creationDate;
    /** @attribute SoapElement(IsNullable = true)
     */
    public Thing thing;
} //Transportation

public class Thing
{
    /** @attribute SoapElement(IsNullable = true)
     */
    public String thingName;
} //Thing

public class Test
{
    public static void main(String[] args)
    {
        Test t = new Test();
        t.SerializeObject("SoapElementOriginal.xml");
        t.SerializeOverride("SoapElementOverride.xml");
        Console.WriteLine("Finished writing two XML files.");
    } //main

    // Return an XmlSerializer used for overriding.
    public XmlSerializer CreateSoapOverrider()
    {
        // Create the SoapAttributes and SoapAttributeOverrides objects.
        SoapAttributes soapAttrs = new SoapAttributes();
        SoapAttributeOverrides soapOverrides = new SoapAttributeOverrides();

        /*  Create an SoapElementAttribute to override 
            the vehicles property. */
        SoapElementAttribute soapElement1 = new SoapElementAttribute("Truck");
        // Set the SoapElement to the object.
        soapAttrs.set_SoapElement(soapElement1);

        /*  Add the SoapAttributes to the SoapAttributeOverrides,
            specifying the member to override. */
        soapOverrides.Add(Transportation.class.ToType(), "Vehicle", soapAttrs);
        // Create the XmlSerializer, and return it.
        XmlTypeMapping myTypeMapping 
            = (new SoapReflectionImporter(soapOverrides)).
            ImportTypeMapping(Transportation.class.ToType());
        return new XmlSerializer(myTypeMapping);
    } //CreateSoapOverrider

    public void SerializeOverride(String fileName)
    {
        // Create an XmlSerializer instance.
        XmlSerializer ser = CreateSoapOverrider();
        // Create the object and serialize it.
        Transportation myTransportation = new Transportation();

        myTransportation.vehicle = "MyCar";
        myTransportation.creationDate = DateTime.get_Now();
        myTransportation.thing = new Thing();

        XmlTextWriter writer = new XmlTextWriter(fileName, 
            Encoding.get_UTF8());
        writer.set_Formatting(Formatting.Indented);
        writer.WriteStartElement("wrapper");
        ser.Serialize(writer, myTransportation);
        writer.WriteEndElement();
        writer.Close();
    } //SerializeOverride

    public void SerializeObject(String fileName)
    {
        // Create an XmlSerializer instance.
        XmlSerializer ser = new XmlSerializer(Transportation.class.ToType());
        Transportation myTransportation = new Transportation();
        myTransportation.vehicle = "MyCar";
        myTransportation.creationDate = DateTime.get_Now();
        myTransportation.thing = new Thing();
        XmlTextWriter writer = new XmlTextWriter(fileName, Encoding.get_UTF8());
        writer.set_Formatting(Formatting.Indented);
        writer.WriteStartElement("wrapper");
        ser.Serialize(writer, myTransportation);
        writer.WriteEndElement();
        writer.Close();
    } //SerializeObject
} //Test

Vererbungshierarchie

System.Object
   System.Xml.Serialization.XmlMapping
    System.Xml.Serialization.XmlTypeMapping

Threadsicherheit

Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.

Plattformen

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile für Pocket PC, Windows Mobile für Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.

Versionsinformationen

.NET Framework

Unterstützt in: 2.0, 1.1, 1.0

.NET Compact Framework

Unterstützt in: 2.0

Siehe auch

Referenz

XmlTypeMapping-Member
System.Xml.Serialization-Namespace

Weitere Ressourcen

Einführung in die XML-Serialisierung
Gewusst wie: Serialisieren eines Objekts als SOAP-codierter XML-Stream
Attribute für die Steuerung der Serialisierung von codiertem SOAP
Beispiele für die XML-Serialisierung