XmlAnyElementAttributes Clase

Definición

public ref class XmlAnyElementAttributes : System::Collections::IList

public ref class XmlAnyElementAttributes : System::Collections::CollectionBase

public class XmlAnyElementAttributes : System.Collections.IList

public class XmlAnyElementAttributes : System.Collections.CollectionBase

type XmlAnyElementAttributes = class
    interface ICollection
    interface IEnumerable
    interface IList

type XmlAnyElementAttributes = class
    inherit CollectionBase

Public Class XmlAnyElementAttributes
Implements IList

Public Class XmlAnyElementAttributes
Inherits CollectionBase

Herencia

Object

XmlAnyElementAttributes

Herencia

Object

CollectionBase

XmlAnyElementAttributes

Implementaciones

ICollection IEnumerable IList

Ejemplos

En el ejemplo siguiente se crea un nuevo XmlAnyElementAttribute y se agrega a la colección de objetos a los que se accede a través de la XmlAnyElements propiedad . A XmlAttributes continuación, se agrega a un XmlAttributeOverrides objeto que se usa para crear un XmlSerializerobjeto . XmlSerializer se usa para serializar o deserializar un objeto . Para ver el efecto de usar la XmlAnyElementAttributes propiedad , cree un documento XML denominado UnknownElements.xml ejecutando el SerializeObject método en el Main método . Edite el documento resultante para incluir otros elementos (desconocidos). Convierta en comentario la SerializeObject llamada en el Main método y quite la marca de comentario de la llamada al DeserializeObject método , que imprime el nombre y el valor de cualquier elemento XML desconocido.

#using <System.dll>
#using <System.xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml::Serialization;
using namespace System::Xml;
public ref class Group
{
public:
   String^ GroupName;

   [XmlAnyElement]
   array<Object^>^Things;
};

void SerializeObject( String^ filename );
void DeserializeObject( String^ filename );
XmlSerializer^ CreateOverrideSerializer();
int main()
{
   // 1 Run this and create the XML document.
   // 2 Add new elements to the XML document.
   // 3 Comment out the next line, and uncomment
   // the DeserializeObject line to deserialize the
   // XML document and see unknown elements.
   SerializeObject( "UnknownElements.xml" );

   // DeserializeObject(S"UnknownElements.xml");
}

void SerializeObject( String^ filename )
{
   XmlSerializer^ ser = gcnew XmlSerializer( Group::typeid );
   TextWriter^ writer = gcnew StreamWriter( filename );
   Group^ g = gcnew Group;
   g->GroupName = "MyGroup";
   ser->Serialize( writer, g );
   writer->Close();
}

void DeserializeObject( String^ filename )
{
   XmlSerializer^ ser = CreateOverrideSerializer();

   // A FileStream is needed to read the XML document.
   FileStream^ fs = gcnew FileStream( filename,FileMode::Open );
   Group^ g = safe_cast<Group^>(ser->Deserialize( fs ));
   fs->Close();
   Console::WriteLine( g->GroupName );
   Console::WriteLine( g->Things->Length );
   for ( int i = 0; i < g->Things->Length; ++i )
   {
      XmlElement^ xelement = safe_cast<XmlElement^>(g->Things[ i ]);
      Console::WriteLine( "{0}: {1}", xelement->Name, xelement->InnerXml );
   }
}

XmlSerializer^ CreateOverrideSerializer()
{
   XmlAnyElementAttribute^ myAnyElement = gcnew XmlAnyElementAttribute;
   XmlAttributeOverrides^ xOverride = gcnew XmlAttributeOverrides;
   XmlAttributes^ xAtts = gcnew XmlAttributes;
   xAtts->XmlAnyElements->Add( myAnyElement );
   xOverride->Add( Group::typeid, "Things", xAtts );
   return gcnew XmlSerializer( Group::typeid,xOverride );
}

using System;
using System.IO;
using System.Xml.Serialization;
using System.Xml;

public class Group{
   public string GroupName;
   [XmlAnyElement]
   public object[]Things;
}

public class Test{
   static void Main(){
      Test t = new Test();
      // 1 Run this and create the XML document.
      // 2 Add new elements to the XML document.
      // 3 Comment out the new line, and uncomment
      // the DeserializeObject line to deserialize the
      // XML document and see unknown elements.
      t.SerializeObject("UnknownElements.xml");
     
      // t.DeserializeObject("UnknownElements.xml");
   }

   private void SerializeObject(string filename){
      XmlSerializer ser = new XmlSerializer(typeof (Group));
      TextWriter writer = new StreamWriter(filename);
      Group g = new Group();
      g.GroupName = "MyGroup";
      ser.Serialize(writer, g);
      writer.Close();
   }

   private void DeserializeObject(string filename){

      XmlSerializer ser = CreateOverrideSerializer();
      // A FileStream is needed to read the XML document.
      FileStream fs = new FileStream(filename, FileMode.Open);
     Group g = (Group)
        ser.Deserialize(fs);
     fs.Close();
     Console.WriteLine(g.GroupName);
     Console.WriteLine(g.Things.Length);
     foreach(XmlElement xelement in g.Things){
     Console.WriteLine(xelement.Name + ": " + xelement.InnerXml);
     }
   }

   private XmlSerializer CreateOverrideSerializer(){
      XmlAnyElementAttribute myAnyElement = 
      new XmlAnyElementAttribute();
      XmlAttributeOverrides xOverride = 
      new XmlAttributeOverrides();
      XmlAttributes xAtts = new XmlAttributes();
      xAtts.XmlAnyElements.Add(myAnyElement);
      xOverride.Add(typeof(Group), "Things", xAtts);
      return new XmlSerializer(typeof(Group) , xOverride);
   }
}

Imports System.IO
Imports System.Xml.Serialization
Imports System.Xml

Public Class Group
   Public GroupName As String 
   <XmlAnyElement> _
   Public Things () As object
End Class

Public Class Test
   Shared Sub Main()
      Dim t As Test = New Test()
      ' 1 Run this and create the XML document.
      ' 2 Add New elements to the XML document.
      ' 3 Comment out the New line, and uncomment
      ' the DeserializeObject line to deserialize the
      ' XML document and see unknown elements.
     t.SerializeObject("UnknownElements.xml")
     
      't.DeserializeObject("UnknownElements.xml")
   End Sub

   Private Sub SerializeObject(filename As String)
      Dim ser As XmlSerializer = New XmlSerializer(GetType (Group))
      Dim writer As TextWriter = New StreamWriter(filename)
      
      Dim g As Group = New Group()
      g.GroupName = "MyGroup"
      ser.Serialize(writer, g)
      writer.Close()
   End Sub

   
   Private Sub DeserializeObject(filename As String)

      Dim ser As XmlSerializer = CreateOverrideSerializer()
      ' A FileStream is needed to read the XML document.
      Dim fs As FileStream = New FileStream(filename, FileMode.Open)
     Dim g As Group = CType( _
        ser.Deserialize(fs), Group)
     fs.Close()
     Console.WriteLine(g.GroupName)
     Console.WriteLine(g.Things.Length)
     Dim xelement As XmlELement
     for each xelement in g.Things
        Console.WriteLine(xelement.Name &": " & xelement.InnerXml)
     next
   End Sub
   

   Private Function CreateOverrideSerializer() As XmlSerializer 
      Dim myAnyElement As XmlAnyElementAttribute = _
      New XmlAnyElementAttribute()
      Dim xOverride As XmlAttributeOverrides = _
      New XmlAttributeOverrides()
      Dim xAtts As XmlAttributes = New XmlAttributes()
      xAtts.XmlAnyElements.Add(myAnyElement)
      xOverride.Add(GetType(Group), "Things", xAtts)
      return New XmlSerializer(GetType(Group) , xOverride)
   End Function
End Class

Comentarios

XmlAnyElementAttributes Use para invalidar el comportamiento de un conjunto de XmlAnyElementAttribute objetos. Se pueden aplicar varias instancias de la XmlAnyElementAttribute clase a un miembro de clase, siempre que cada instancia tenga un valor de propiedad distinto Name ; esto indica a que XmlSerializer recopile elementos desconocidos en el elemento con nombre en la matriz adecuada. Por este motivo, se pueden agregar varias instancias de la XmlAnyElementAttribute clase a .XmlAnyElementAttributes

Para invalidar un conjunto de XmlAnyElementAttribute objetos:

1. Cree un XmlAnyElementAttributesobjeto .

2. Cree el conjunto de XmlAnyElementAttribute objetos y agregue cada objeto a la colección mediante el Add método .

3. Cree un XmlAttributesobjeto .

4. Establezca la XmlAnyElements propiedad en .XmlAnyElementAttributes

5. Cree un XmlAttributeOverridesobjeto .

6. XmlAttributes Agregue a XmlAttributeOverrides mediante el Add método .

7. Cree una instancia de XmlSerializer mediante XmlAttributeOverrides.

8. Serialice o deserialice un objeto que contiene el conjunto de XmlAnyElementAttribute objetos .

Constructores

Propiedades

Métodos

Implementaciones de interfaz explícitas

Métodos de extensión

Se aplica a