XmlAttributes.XmlArray Eigenschaft

public:
 property System::Xml::Serialization::XmlArrayAttribute ^ XmlArray { System::Xml::Serialization::XmlArrayAttribute ^ get(); void set(System::Xml::Serialization::XmlArrayAttribute ^ value); };

public System.Xml.Serialization.XmlArrayAttribute XmlArray { get; set; }

public System.Xml.Serialization.XmlArrayAttribute? XmlArray { get; set; }

member this.XmlArray : System.Xml.Serialization.XmlArrayAttribute with get, set

Public Property XmlArray As XmlArrayAttribute

Eigenschaftswert

XmlArrayAttribute

Ein XmlArrayAttribute, das angibt, wie XmlSerializer ein öffentliches Feld oder eine Lese-/Schreibeigenschaft serialisiert, die ein Array zurückgibt.

Beispiele

Im folgenden Beispiel wird eine Klasse serialisiert, die ein Feld Members enthält, das ein Array von Objekten zurückgibt. Dies XmlArrayAttribute wird verwendet, um die Serialisierung des Felds außer Kraft zu setzen und den Elementnamen in umzubenennen Staff.

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

using namespace System;
using namespace System::IO;
using namespace System::Xml;
using namespace System::Xml::Serialization;
public ref class Member
{
public:
   String^ MemberName;
};


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

   // This field will be overridden.
   array<Member^>^Members;
};


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

   // Add an override for the XmlArray.    
   XmlArrayAttribute^ xArray = gcnew XmlArrayAttribute( "Staff" );
   xArray->Namespace = "http://www.cpandl.com";
   xAttrs->XmlArray = xArray;
   xOver->Add( Group::typeid, "Members", 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 object properties.
   Member^ m = gcnew Member;
   m->MemberName = "Paul";
   array<Member^>^temp = {m};
   myGroup->Members = temp;

   // 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 ));
   System::Collections::IEnumerator^ myEnum = myGroup->Members->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Member^ m = safe_cast<Member^>(myEnum->Current);
      Console::WriteLine( m->MemberName );
   }
}

int main()
{
   SerializeObject( "OverrideArray.xml" );
   DeserializeObject( "OverrideArray.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 field will be overridden.
   public Member [] Members;
}

public class Member
{
   public string MemberName;
}

public class Run
{
   public static void Main()
   {
      Run test = new Run();
      test.SerializeObject("OverrideArray.xml");
      test.DeserializeObject("OverrideArray.xml");
   }
   // Return an XmlSerializer used for overriding.
   public XmlSerializer CreateOverrider()
   {
      // Creating XmlAttributeOverrides and XmlAttributes objects.
      XmlAttributeOverrides xOver = new XmlAttributeOverrides();
      XmlAttributes xAttrs = new XmlAttributes();

      // Add an override for the XmlArray.
      XmlArrayAttribute xArray = new XmlArrayAttribute("Staff");
      xArray.Namespace = "http://www.cpandl.com";
      xAttrs.XmlArray = xArray;
      xOver.Add(typeof(Group), "Members", 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 object properties.
      Member m = new Member();
      m.MemberName = "Paul";
      myGroup.Members = new Member[1] {m};

      // 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);
      foreach(Member m in myGroup.Members)
      {
         Console.WriteLine(m.MemberName);
      }
   }
}

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


' This is the class that will be serialized.
Public Class Group
    ' This field will be overridden.
    Public Members() As Member
End Class

Public Class Member
    Public MemberName As String
End Class

Public Class Run
    
    Public Shared Sub Main()
        Dim test As New Run()
        test.SerializeObject("OverrideArray.xml")
        test.DeserializeObject("OverrideArray.xml")
    End Sub
    
    ' Return an XmlSerializer used for overriding. 
    Public Function CreateOverrider() As XmlSerializer
        ' Creating XmlAttributeOverrides and XmlAttributes objects.
        Dim xOver As New XmlAttributeOverrides()
        Dim xAttrs As New XmlAttributes()
        
        ' Add an override for the XmlArray.    
        Dim xArray As New XmlArrayAttribute("Staff")
        xArray.Namespace = "http://www.cpandl.com"
        xAttrs.XmlArray = xArray
        xOver.Add(GetType(Group), "Members", xAttrs)
        
        ' Create the XmlSerializer and return it.
        Return New XmlSerializer(GetType(Group), xOver)
    End Function
    
    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 object properties.
        Dim m As New Member()
        m.MemberName = "Paul"
        myGroup.Members = New Member(0) {m}
        
        ' 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)
        Dim m As Member
        For Each m In  myGroup.Members
            Console.WriteLine(m.MemberName)
        Next m
    End Sub
End Class

Hinweise

Es gibt zwei Möglichkeiten, wie eine öffentliche Feld- oder öffentliche Lese-/Schreibeigenschaft, die ein Array zurückgibt, durch die XmlSerializer: die Standard serialisierung und die kontrollierte Serialisierung serialisiert wird.

In der Standard serialisierung wird kein Attribut auf das Element angewendet. Wenn serialisiert, wird das Array als geschachtelte Sequenz von XML-Elementen mit dem XML-Elementnamen der geschachtelten Sequenz aus dem Membernamen serialisiert.

Um die Serialisierung genauer zu steuern, wenden Sie ein Feld oder die Eigenschaft an XmlArrayAttribute . Sie können beispielsweise den generierten XML-Elementnamen von der Standardeinstellung in einen anderen Namen ändern, indem Sie die ElementName Eigenschaft auf einen neuen Wert festlegen.

Mit der XmlArray Eigenschaft können Sie die Standard serialisierung sowie die Serialisierung außer Kraft setzen, die durch Anwenden eines XmlArrayAttribute Elements gesteuert wird. Sie können z. B. den XML-Elementnamen ändern, der aus dem Standardwert (dem Memberbezeichner) in einen neuen Wert generiert wird. Wenn Sie ein XmlArrayAttribute Element anwenden, wird es darüber hinaus von allen XmlArrayAttribute außer Kraft gesetzt, die der XmlArray Eigenschaft zugewiesen sind.

Gilt für