XmlAttributes.XmlAttribute XmlAttributes.XmlAttribute XmlAttributes.XmlAttribute XmlAttributes.XmlAttribute Property

Definition

Ruft ein Objekt ab, das angibt, wie XmlSerializer ein öffentliches Feld oder eine öffentliche Lese-/Schreibeigenschaft als XML-Attribut serialisiert, oder legt dieses fest.Gets or sets an object that specifies how the XmlSerializer serializes a public field or public read/write property as an XML attribute.

public:
 property System::Xml::Serialization::XmlAttributeAttribute ^ XmlAttribute { System::Xml::Serialization::XmlAttributeAttribute ^ get(); void set(System::Xml::Serialization::XmlAttributeAttribute ^ value); };
public System.Xml.Serialization.XmlAttributeAttribute XmlAttribute { get; set; }
member this.XmlAttribute : System.Xml.Serialization.XmlAttributeAttribute with get, set
Public Property XmlAttribute As XmlAttributeAttribute

Eigenschaftswert

Ein XmlAttributeAttribute, das die Serialisierung eines öffentlichen Felds oder einer Lese-/Schreibeigenschaft als XML-Attribut steuert.An XmlAttributeAttribute that controls the serialization of a public field or read/write property as an XML attribute.

Beispiele

Im folgenden Beispiel wird eine Klasse mit dem Group Namen serialisiert, die GroupNameeine Eigenschaft GroupName mit dem Namen enthält. die Eigenschaft wird als XML-Attribut serialisiert.The following example serializes a class named Group that contains a property named GroupName; the GroupName property is serialized as an XML attribute. Im Beispiel wird ein XmlAttributeOverrides und ein XmlAttributes -Objekt erstellt, um die Standardserialisierung des Felds zu überschreiben.The example creates an XmlAttributeOverrides and an XmlAttributes object to override the default serialization of the field. Im Beispiel wird dann ein XmlAttributeAttribute erstellt, um die-Eigenschaft explizit zu überschreiben, und das XmlAttribute -Objekt XmlAttributes wird auf die-Eigenschaft XmlAttributeOverrides festgelegt, mit der das Objekt dem-Objekt mit dem Namen des überschriebenen Members hinzugefügt wird.The example then creates an XmlAttributeAttribute to specifically override the property, and the object is set to the XmlAttribute property The XmlAttributes object is added to the XmlAttributeOverrides object with the name of the overridden member specified. Schließlich wird mit dem XmlAttributeOverrides -Objekt erstellt und zurückgegeben. XmlSerializerFinally, an XmlSerializer is constructed and returned using the XmlAttributeOverrides object.

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

using namespace System;
using namespace System::IO;
using namespace System::Xml;
using namespace System::Xml::Serialization;

// This is the class that will be serialized.
public ref class Group
{
public:

   // This is the attribute that will be overridden.

   [XmlAttributeAttribute]
   String^ GroupName;
   int GroupNumber;
};

// Return an XmlSerializer used for overriding. 
XmlSerializer^ CreateOverrider()
{
   // Create the XmlAttributeOverrides and XmlAttributes objects.
   XmlAttributeOverrides^ xOver = gcnew XmlAttributeOverrides;
   XmlAttributes^ xAttrs = gcnew XmlAttributes;

   /* Create an overriding XmlAttributeAttribute set it to 
      the XmlAttribute property of the XmlAttributes object.*/
   XmlAttributeAttribute^ xAttribute = gcnew XmlAttributeAttribute( "SplinterName" );
   xAttrs->XmlAttribute = xAttribute;

   // Add to the XmlAttributeOverrides. Specify the member name.
   xOver->Add( Group::typeid, "GroupName", xAttrs );

   // Create the XmlSerializer and return it.
   return gcnew XmlSerializer( Group::typeid,xOver );
}

void SerializeObject( String^ filename )
{
   // Create an instance of the XmlSerializer class.
   XmlSerializer^ mySerializer = CreateOverrider();

   // Writing the file requires a TextWriter.
   TextWriter^ writer = gcnew StreamWriter( filename );

   // Create an instance of the class that will be serialized.
   Group^ myGroup = gcnew Group;

   /* Set the Name property, which will be generated 
      as an XML attribute. */
   myGroup->GroupName = ".NET";
   myGroup->GroupNumber = 1;

   // Serialize the class, and close the TextWriter.
   mySerializer->Serialize( writer, myGroup );
   writer->Close();
}

void DeserializeObject( String^ filename )
{
   XmlSerializer^ mySerializer = CreateOverrider();
   FileStream^ fs = gcnew FileStream( filename,FileMode::Open );
   Group^ myGroup = dynamic_cast<Group^>(mySerializer->Deserialize( fs ));
   Console::WriteLine( myGroup->GroupName );
   Console::WriteLine( myGroup->GroupNumber );
}

int main()
{
   SerializeObject( "OverrideAttribute.xml" );
   DeserializeObject( "OverrideAttribute.xml" );
}
using System;
using System.IO;
using System.Xml;
using System.Xml.Serialization;

// This is the class that will be serialized.
public class Group
{
   // This is the attribute that will be overridden.
   [XmlAttribute]
   public string GroupName;
   public int GroupNumber;
}
 
public class Run
{
   public static void Main()
   {
      Run test = new Run();
      test.SerializeObject("OverrideAttribute.xml");
      test.DeserializeObject("OverrideAttribute.xml");
   }
   // Return an XmlSerializer used for overriding. 
   public XmlSerializer CreateOverrider()
   {
      // Create the XmlAttributeOverrides and XmlAttributes objects.
      XmlAttributeOverrides xOver = new XmlAttributeOverrides();
      XmlAttributes xAttrs = new XmlAttributes();

      /* Create an overriding XmlAttributeAttribute set it to 
      the XmlAttribute property of the XmlAttributes object.*/
      XmlAttributeAttribute xAttribute = new XmlAttributeAttribute("SplinterName");
      xAttrs.XmlAttribute = xAttribute;

      // Add to the XmlAttributeOverrides. Specify the member name.
      xOver.Add(typeof(Group), "GroupName", xAttrs);

      // Create the XmlSerializer and return it.
      return new XmlSerializer(typeof(Group), xOver);
   }
 
   public void SerializeObject(string filename)
   {
      // Create an instance of the XmlSerializer class.
      XmlSerializer mySerializer =  CreateOverrider();
      // Writing the file requires a TextWriter.
      TextWriter writer = new StreamWriter(filename);

      // Create an instance of the class that will be serialized.
      Group myGroup = new Group();

      /* Set the Name property, which will be generated 
      as an XML attribute. */
      myGroup.GroupName = ".NET";
      myGroup.GroupNumber = 1;
      // Serialize the class, and close the TextWriter.
      mySerializer.Serialize(writer, myGroup);
       writer.Close();
   }

   public void DeserializeObject(string filename)
   {
      XmlSerializer mySerializer = CreateOverrider();
      FileStream fs = new FileStream(filename, FileMode.Open);
      Group myGroup = (Group) 
      mySerializer.Deserialize(fs);
      
      Console.WriteLine(myGroup.GroupName);
      Console.WriteLine(myGroup.GroupNumber);
   }
}
   
Imports System
Imports System.IO
Imports System.Xml
Imports System.Xml.Serialization


' This is the class that will be serialized.
Public Class Group
    ' This is the attribute that will be overridden.
    <XmlAttribute()> Public GroupName As String
    Public GroupNumber As Integer
End Class


Public Class Run
    
    Public Shared Sub Main()
        Dim test As New Run()
        test.SerializeObject("OverrideAttribute.xml")
        test.DeserializeObject("OverrideAttribute.xml")
    End Sub
    
    ' Return an XmlSerializer used for overriding. 
    Public Function CreateOverrider() As XmlSerializer
        ' Create the XmlAttributeOverrides and XmlAttributes objects.
        Dim xOver As New XmlAttributeOverrides()
        Dim xAttrs As New XmlAttributes()
        
        ' Create an overriding XmlAttributeAttribute set it to
        ' the XmlAttribute property of the XmlAttributes object.
        Dim xAttribute As New XmlAttributeAttribute("SplinterName")
        xAttrs.XmlAttribute = xAttribute
        
        ' Add to the XmlAttributeOverrides. Specify the member name.
        xOver.Add(GetType(Group), "GroupName", xAttrs)
        
        ' Create the XmlSerializer and return it.
        Return New XmlSerializer(GetType(Group), xOver)
    End Function 'CreateOverrider
    
    
    Public Sub SerializeObject(ByVal filename As String)
        ' Create an instance of the XmlSerializer class.
        Dim mySerializer As XmlSerializer = CreateOverrider()
        ' Writing the file requires a TextWriter.
        Dim writer As New StreamWriter(filename)
        
        ' Create an instance of the class that will be serialized.
        Dim myGroup As New Group()
        
        ' Set the Name property, which will be generated
        ' as an XML attribute. 
        myGroup.GroupName = ".NET"
        myGroup.GroupNumber = 1
        ' Serialize the class, and close the TextWriter.
        mySerializer.Serialize(writer, myGroup)
        writer.Close()
    End Sub
    
    
    Public Sub DeserializeObject(ByVal filename As String)
        Dim mySerializer As XmlSerializer = CreateOverrider()
        Dim fs As New FileStream(filename, FileMode.Open)
        Dim myGroup As Group = CType(mySerializer.Deserialize(fs), Group)

        Console.WriteLine(myGroup.GroupName)
        Console.WriteLine(myGroup.GroupNumber)
    End Sub
End Class

Hinweise

Wenn kein Attribut auf ein öffentliches Feld oder eine öffentliche Lese-/Schreibeigenschaft angewendet wird, wird es standardmäßig als XML-Element serialisiert.By default, if no attribute is applied to a public field or public read/write property, it is serialized as an XML element. Sie können auch anweisen XmlSerializer , ein XML-Attribut zu generieren, XmlAttributeAttribute indem Sie auf das Feld oder die Eigenschaft anwenden.You can also instruct the XmlSerializer to generate an XML attribute by applying an XmlAttributeAttribute to the field or property.

Mit XmlAttribute der-Eigenschaft können Sie die Standardserialisierung sowie die Serialisierung überschreiben, die durch Anwenden XmlAttributeAttribute eines auf den Member gesteuert wird.The XmlAttribute property allows you to override the default serialization, as well as the serialization controlled by applying an XmlAttributeAttribute to the member. Erstellen Sie hierzu eine XmlAttributeAttribute , und legen Sie die zugehörigen Eigenschaften fest ( AttributeNamez. b.).To do this, create an XmlAttributeAttribute and set its properties (such as AttributeName). Weisen Sie das neue-Objekt XmlAttribute der-Eigenschaft XmlAttributes eines-Objekts zu.Assign the new object to the XmlAttribute property of an XmlAttributes object. Fügen Sie XmlAttributes das-Objekt XmlAttributeOverrides zu einem-Objekt hinzu, und geben Sie den Typ des Objekts an, das das Feld oder die Eigenschaft enthält, sowie den Namen des Felds oder der Eigenschaft.Add the XmlAttributes object to an XmlAttributeOverrides object and specify the type of the object that contains the field or property, and the name of the field or property. Erstellen XmlSerializer Sie abschließend mit dem XmlAttributeOverrides -Objekt, und rufen Serialize Sie Deserialize die-oder-Methode auf.Lastly, create an XmlSerializer using the XmlAttributeOverrides object and call the Serialize or Deserialize method.

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