XmlAttributes コンストラクタ ()

.NET Framework クラス ライブラリ リファレンス

XmlAttributes コンストラクタ ()

XmlAttributes クラスの新しいインスタンスを初期化します。

名前空間: System.Xml.Serialization
アセンブリ: System.Xml (system.xml.dll 内)
構文

Visual Basic (宣言)

Public Sub New

Visual Basic (使用法)

Dim instance As New XmlAttributes

C#

public XmlAttributes ()

C++

public:
XmlAttributes ()

J#

public XmlAttributes ()

JScript

public function XmlAttributes ()

使用例

Orchestra という名前のクラスをシリアル化する例を次に示します。この例には、Instrument オブジェクトの配列を返す Instruments という名前の単一のフィールドが含まれています。Brass という名前の 2 番目のクラスが Instrument クラスから継承されます。この例では、XmlAttributes オブジェクトを作成して Instrument フィールドをオーバーライドします。このオーバーライドにより、フィールドが Brass オブジェクトを受け入れるようにして、XmlAttributes オブジェクトを XmlAttributeOverrides クラスのインスタンスに追加します。

Visual Basic

Imports System
Imports System.IO
Imports System.Xml.Serialization
Imports Microsoft.VisualBasic


Public Class Orchestra
    Public Instruments() As Instrument
End Class

Public Class Instrument
    Public Name As String
End Class

Public Class Brass
    Inherits Instrument
    Public IsValved As Boolean
End Class


Public Class Run
    
    Public Shared Sub Main()
        Dim test As New
 Run()
        test.SerializeObject("Override.xml")
        test.DeserializeObject("Override.xml")
    End Sub    
    
    Public Sub SerializeObject(ByVal
 filename As String)
        ' Each overridden field, property, or type requires
        ' an XmlAttributes object. 
        Dim attrs As New
 XmlAttributes()
        
        ' Create an XmlElementAttribute to override the
        ' field that returns Instrument objects. The overridden field
        ' returns Brass objects instead. 
        Dim attr As New
 XmlElementAttribute()
        attr.ElementName = "Brass"
        attr.Type = GetType(Brass)
        
        ' Add the element to the collection of elements.
        attrs.XmlElements.Add(attr)
        
        ' Create the XmlAttributeOverrides object.
        Dim attrOverrides As New
 XmlAttributeOverrides()
        
        ' Add the type of the class that contains the overridden
        ' member and the XmlAttributes to override it with to the
        ' XmlAttributeOverrides object. 
        attrOverrides.Add(GetType(Orchestra), "Instruments",
 attrs)
        
        ' Create the XmlSerializer using the XmlAttributeOverrides.
        Dim s As New XmlSerializer(GetType(Orchestra),
 attrOverrides)
        
        ' Writing the file requires a TextWriter.
        Dim writer As New
 StreamWriter(filename)
        
        ' Create the object that will be serialized.
        Dim band As New
 Orchestra()
        
        ' Create an object of the derived type.
        Dim i As New Brass()
        i.Name = "Trumpet"
        i.IsValved = True
        Dim myInstruments() As Instrument =
 {i}
        band.Instruments = myInstruments
        
        ' Serialize the object.
        s.Serialize(writer, band)
        writer.Close()
    End Sub
    
    
    Public Sub DeserializeObject(ByVal
 filename As String)
        Dim attrOverrides As New
 XmlAttributeOverrides()
        Dim attrs As New
 XmlAttributes()
        
        ' Create an XmlElementAttribute to override the Instrument.
        Dim attr As New
 XmlElementAttribute()
        attr.ElementName = "Brass"
        attr.Type = GetType(Brass)
        
        ' Add the element to the collection of elements.
        attrs.XmlElements.Add(attr)
        
        attrOverrides.Add(GetType(Orchestra), "Instruments",
 attrs)
        
        ' Create the XmlSerializer using the XmlAttributeOverrides.
        Dim s As New XmlSerializer(GetType(Orchestra),
 attrOverrides)
        
        Dim fs As New FileStream(filename,
 FileMode.Open)
        Dim band As Orchestra = CType(s.Deserialize(fs),
 Orchestra)
        Console.WriteLine("Brass:")
        
        ' The difference between deserializing the overridden
        ' XML document and serializing it is this: To read the derived
        ' object values, you must declare an object of the derived type
        ' (Brass), and cast the Instrument instance to it. 
        Dim b As Brass
        Dim i As Instrument
        For Each i In  band.Instruments
            b = CType(i, Brass)
            Console.WriteLine(b.Name + ControlChars.Cr + _
                              b.IsValved.ToString())
        Next i
    End Sub
End Class

C#

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

public class Orchestra
{
   public Instrument[] Instruments;
}   

public class Instrument
{
   public string Name;
}

public class Brass:Instrument
{
   public bool IsValved;
}

public class Run
{
    public static void Main()
    {
       Run test = new Run();
       test.SerializeObject("Override.xml");
       test.DeserializeObject("Override.xml");
    }

    public void SerializeObject(string
 filename)
    {
      /* Each overridden field, property, or type requires 
      an XmlAttributes object. */
      XmlAttributes attrs = new XmlAttributes();

      /* Create an XmlElementAttribute to override the 
      field that returns Instrument objects. The overridden field
      returns Brass objects instead. */
      XmlElementAttribute attr = new XmlElementAttribute();
      attr.ElementName = "Brass";
      attr.Type = typeof(Brass);

      // Add the element to the collection of elements.
      attrs.XmlElements.Add(attr);

      // Create the XmlAttributeOverrides object.
      XmlAttributeOverrides attrOverrides = new XmlAttributeOverrides();

      /* Add the type of the class that contains the overridden
 
      member and the XmlAttributes to override it with to the 
      XmlAttributeOverrides object. */
      attrOverrides.Add(typeof(Orchestra), "Instruments", attrs);

      // Create the XmlSerializer using the XmlAttributeOverrides.
      XmlSerializer s = 
      new XmlSerializer(typeof(Orchestra), attrOverrides);

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

      // Create the object that will be serialized.
      Orchestra band = new Orchestra();
      
      // Create an object of the derived type.
      Brass i = new Brass();
      i.Name = "Trumpet";
      i.IsValved = true;
      Instrument[] myInstruments = {i};
      band.Instruments = myInstruments;

      // Serialize the object.
      s.Serialize(writer,band);
      writer.Close();
   }

   public void DeserializeObject(string
 filename)
   {
      XmlAttributeOverrides attrOverrides = 
         new XmlAttributeOverrides();
      XmlAttributes attrs = new XmlAttributes();

      // Create an XmlElementAttribute to override the Instrument.
      XmlElementAttribute attr = new XmlElementAttribute();
      attr.ElementName = "Brass";
      attr.Type = typeof(Brass);

      // Add the element to the collection of elements.
      attrs.XmlElements.Add(attr);

      attrOverrides.Add(typeof(Orchestra), "Instruments", attrs);

      // Create the XmlSerializer using the XmlAttributeOverrides.
      XmlSerializer s = 
      new XmlSerializer(typeof(Orchestra), attrOverrides);

      FileStream fs = new FileStream(filename, FileMode.Open);
      Orchestra band = (Orchestra) s.Deserialize(fs);
      Console.WriteLine("Brass:");

      /* The difference between deserializing the overridden 
      XML document and serializing it is this: To read the derived
 
      object values, you must declare an object of the derived type 
      (Brass), and cast the Instrument instance to it. */
      Brass b;
      foreach(Instrument i in band.Instruments)
 
      {
         b = (Brass)i;
         Console.WriteLine(
         b.Name + "\n" + 
         b.IsValved);
      }
   }
}

C++

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

using namespace System;
using namespace System::IO;
using namespace System::Xml::Serialization;
public ref class Instrument
{
public:
   String^ Name;
};

public ref class Brass: public
 Instrument
{
public:
   bool IsValved;
};

public ref class Orchestra
{
public:
   array<Instrument^>^Instruments;
};

void SerializeObject( String^ filename )
{
   /* Each overridden field, property, or type requires 
      an XmlAttributes object. */
   XmlAttributes^ attrs = gcnew XmlAttributes;

   /* Create an XmlElementAttribute to override the 
      field that returns Instrument objects. The overridden field
      returns Brass objects instead. */
   XmlElementAttribute^ attr = gcnew XmlElementAttribute;
   attr->ElementName = "Brass";
   attr->Type = Brass::typeid;

   // Add the element to the collection of elements.
   attrs->XmlElements->Add( attr );

   // Create the XmlAttributeOverrides object.
   XmlAttributeOverrides^ attrOverrides = gcnew XmlAttributeOverrides;

   /* Add the type of the class that contains the overridden 
      member and the XmlAttributes to override it with to the 
      XmlAttributeOverrides object. */
   attrOverrides->Add( Orchestra::typeid, "Instruments", attrs );

   // Create the XmlSerializer using the XmlAttributeOverrides.
   XmlSerializer^ s = gcnew XmlSerializer( Orchestra::typeid,attrOverrides );

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

   // Create the object that will be serialized.
   Orchestra^ band = gcnew Orchestra;

   // Create an object of the derived type.
   Brass^ i = gcnew Brass;
   i->Name = "Trumpet";
   i->IsValved = true;
   array<Instrument^>^myInstruments = {i};
   band->Instruments = myInstruments;

   // Serialize the object.
   s->Serialize( writer, band );
   writer->Close();
}

void DeserializeObject( String^ filename )
{
   XmlAttributeOverrides^ attrOverrides = gcnew XmlAttributeOverrides;
   XmlAttributes^ attrs = gcnew XmlAttributes;

   // Create an XmlElementAttribute to override the Instrument.
   XmlElementAttribute^ attr = gcnew XmlElementAttribute;
   attr->ElementName = "Brass";
   attr->Type = Brass::typeid;

   // Add the element to the collection of elements.
   attrs->XmlElements->Add( attr );
   attrOverrides->Add( Orchestra::typeid, "Instruments", attrs );

   // Create the XmlSerializer using the XmlAttributeOverrides.
   XmlSerializer^ s = gcnew XmlSerializer( Orchestra::typeid,attrOverrides );
   FileStream^ fs = gcnew FileStream( filename,FileMode::Open );
   Orchestra^ band = dynamic_cast<Orchestra^>(s->Deserialize( fs ));
   Console::WriteLine( "Brass:" );

   /* The difference between deserializing the overridden 
      XML document and serializing it is this: To read the derived
 
      object values, you must declare an object of the derived type 
      (Brass), and cast the Instrument instance to it. */
   Brass^ b;
   System::Collections::IEnumerator^ myEnum = band->Instruments->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      Instrument^ i = safe_cast<Instrument^>(myEnum->Current);
      b = dynamic_cast<Brass^>(i);
      Console::WriteLine( "{0}\n{1}", b->Name, b->IsValved );
   }
}

int main()
{
   SerializeObject( "Override.xml" );
   DeserializeObject( "Override.xml" );
}

J#

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

public class Orchestra
{
    public Instrument instruments[];
} //Orchestra

public class Instrument
{
    public String name;
} //Instrument

public class Brass extends Instrument
{
    public boolean isValved;
} //Brass

public class Run
{
    public static void main(String[]
 args)
    {
        Run test = new Run();
        test.SerializeObject("Override.xml");
        test.DeserializeObject("Override.xml");
    } //main

    public void SerializeObject(String fileName)
    {
        /* Each overridden field, property, or type requires 
           an XmlAttributes object. */
        XmlAttributes attrs = new XmlAttributes();

        /* Create an XmlElementAttribute to override the 
           field that returns Instrument objects. The overridden field
           returns Brass objects instead. */
        XmlElementAttribute attr = new XmlElementAttribute();
        attr.set_ElementName("Brass");
        attr.set_Type(Brass.class.ToType());

        // Add the element to the collection of elements.
        attrs.get_XmlElements().Add(attr);

        // Create the XmlAttributeOverrides object.
        XmlAttributeOverrides attrOverrides = new XmlAttributeOverrides();

        /* Add the type of the class that contains the overridden
 
           member and the XmlAttributes to override it with to the 
           XmlAttributeOverrides object. */
        attrOverrides.Add(Orchestra.class.ToType(), "instruments",
 attrs);

        // Create the XmlSerializer using the XmlAttributeOverrides.
        XmlSerializer s =
            new XmlSerializer(Orchestra.class.ToType(),
 attrOverrides);

        // Writing the file requires a TextWriter.
        TextWriter writer = new StreamWriter(fileName);

        // Create the object that will be serialized.
        Orchestra band = new Orchestra();

        // Create an object of the derived type.
        Brass i = new Brass();
        i.name = "Trumpet";
        i.isValved = true;
        Instrument myInstruments[] = { i };
        band.instruments = myInstruments;

        // Serialize the object.
        s.Serialize(writer, band);
        writer.Close();
    } //SerializeObject

    public void DeserializeObject(String fileName)
    {
        XmlAttributeOverrides attrOverrides = new XmlAttributeOverrides();
        XmlAttributes attrs = new XmlAttributes();

        // Create an XmlElementAttribute to override the Instrument.
        XmlElementAttribute attr = new XmlElementAttribute();
        attr.set_ElementName("Brass");
        attr.set_Type(Brass.class.ToType());

        // Add the element to the collection of elements.
        attrs.get_XmlElements().Add(attr);
        attrOverrides.Add(Orchestra.class.ToType(), "instruments",
 attrs);

        // Create the XmlSerializer using the XmlAttributeOverrides.
        XmlSerializer s =
            new XmlSerializer(Orchestra.class.ToType(),
 attrOverrides);
        FileStream fs = new FileStream(fileName, FileMode.Open);
        Orchestra band = (Orchestra)s.Deserialize(fs);
        Console.WriteLine("Brass:");

        /* The difference between deserializing the overridden 
           XML document and serializing it is this: To read the derived
 
           object values, you must declare an object of the derived type 
           (Brass), and cast the Instrument instance to it. */
        Brass b;
        for (int iCtr = 0; iCtr < band.instruments.length;
 iCtr++) {
            Instrument i = band.instruments[iCtr];
            b = (Brass)i;
            Console.WriteLine(b.name + "\n" + Convert.ToString(b.isValved));
        }
    } //DeserializeObject
} //Run

プラットフォーム

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

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0
.NET Compact Framework
サポート対象 : 2.0

参照

関連項目
XmlAttributes クラス
XmlAttributes メンバ
System.Xml.Serialization 名前空間

XmlAttributes コンストラクタ (ICustomAttributeProvider)

このコンストラクタは、.NET Framework インフラストラクチャをサポートします。独自に作成したコードから直接使用するためのものではありません。

XmlAttributes クラスの新しいインスタンスを初期化し、XmlSerializer がオブジェクトをシリアル化および逆シリアル化する方法をカスタマイズします。

名前空間: System.Xml.Serialization
アセンブリ: System.Xml (system.xml.dll 内)
構文

Visual Basic (宣言)

Public Sub New ( _
    provider As ICustomAttributeProvider _
)

Visual Basic (使用法)

Dim provider As ICustomAttributeProvider

Dim instance As New XmlAttributes(provider)

C#

public XmlAttributes (
    ICustomAttributeProvider provider
)

C++

public:
XmlAttributes (
    ICustomAttributeProvider^ provider
)

J#

public XmlAttributes (
    ICustomAttributeProvider provider
)

JScript

public function XmlAttributes (
    provider : ICustomAttributeProvider
)

パラメータ

provider

XML のシリアル化を制御する属性の代替実装を提供できるクラス。

解説

このコンストラクタではなく、XmlAttributes クラスの既定コンストラクタを使用してください。

プラットフォーム

Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

開発プラットフォームの中には、.NET Framework によってサポートされていないバージョンがあります。サポートされているバージョンについては、「システム要件」を参照してください。

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
XmlAttributes クラス
XmlAttributes メンバ
System.Xml.Serialization 名前空間

XmlAttributes コンストラクタ

XmlAttributes クラスの新しいインスタンスを初期化します。
オーバーロードの一覧

名前	説明
XmlAttributes ()	XmlAttributes クラスの新しいインスタンスを初期化します。 .NET Compact Framework によってサポートされています。
XmlAttributes (ICustomAttributeProvider)	XmlAttributes クラスの新しいインスタンスを初期化し、XmlSerializer がオブジェクトをシリアル化および逆シリアル化する方法をカスタマイズします。

参照

関連項目

XmlAttributes クラス
XmlAttributes メンバ
System.Xml.Serialization 名前空間