XmlRootAttribute コンストラクタ ()とは? わかりやすく解説

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XmlRootAttribute コンストラクタ ()

XmlRootAttribute クラス新しインスタンス初期化します。

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

Dim instance As New XmlRootAttribute
public XmlRootAttribute ()
public:
XmlRootAttribute ()
public XmlRootAttribute ()
public function XmlRootAttribute ()
使用例使用例

この例では、XmlRootAttributeインスタンス作成し、そのインスタンスを XmlAttributes オブジェクトの XmlRoot プロパティ割り当ててます。XmlSerializer は、MyClass オブジェクトシリアル化するときに、XmlRootAttribute オブジェクト使用して既定ルート要素オーバーライドます。

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


' This is the class that is the default root element.
Public Class MyClass1
    Public Name As String
End Class

Public Class Run
    
    Public Shared Sub Main()
        Dim test As New
 Run()
        test.SerializeOrder("OverrideAttribute.xml")
    End Sub
        
    Public Sub SerializeOrder(ByVal
 filename As String)
        ' Create an XmlSerializer instance using the method below.
        Dim xSer As XmlSerializer = CreateOverrider()
        
        ' Create the object, and set its Name property.
        Dim class1 As New
 MyClass1()
        class1.Name = "New Class Name"
        
        ' Serialize the class, and close the TextWriter.
        Dim writer As New
 StreamWriter(filename)
        xSer.Serialize(writer, class1)
        writer.Close()
    End Sub 'SerializeOrder
    
    
    ' Return an XmlSerializer to override the root serialization.
    Public Function CreateOverrider() As
 XmlSerializer
        ' Create an XmlAttributes to override the default root element.
        Dim attrs As New
 XmlAttributes()
        
        ' Create an XmlRootAttribute and set its element name and namespace.
        Dim xRoot As New
 XmlRootAttribute()
        xRoot.ElementName = "OverriddenRootElementName"
        xRoot.Namespace = "http://www.microsoft.com"
        
        ' Set the XmlRoot property to the XmlRoot object.
        attrs.XmlRoot = xRoot
        Dim xOver As New
 XmlAttributeOverrides()
        
        ' Add the XmlAttributes object to the
        ' XmlAttributeOverrides object. 
        xOver.Add(GetType(MyClass1), attrs)
        
        ' Create the Serializer, and return it.
        Dim xSer As New
 XmlSerializer(GetType(MyClass1), xOver)
        Return xSer
    End Function
End Class

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

// This is the class that is the default root element.
public class MyClass
{
   public string Name;
}

public class Run 
{
   public static void Main()
   {
      Run test = new Run();
      test.SerializeOrder("OverrideAttribute.xml");
   }

   public void SerializeOrder(string
 filename)
   {
      // Create an XmlSerializer instance using the method below.
      XmlSerializer xSer = CreateOverrider();

      // Create the object, and set its Name property.
      MyClass myClass = new MyClass();
      myClass.Name = "New Class Name";

      // Serialize the class, and close the TextWriter.
      TextWriter writer = new StreamWriter(filename);
      xSer.Serialize(writer, myClass);
      writer.Close();
   }

   // Return an XmlSerializer to override the root serialization.
   public XmlSerializer CreateOverrider()
   {
      // Create an XmlAttributes to override the default root element.
      XmlAttributes attrs = new XmlAttributes();

      // Create an XmlRootAttribute and set its element name and namespace.
      XmlRootAttribute xRoot = new XmlRootAttribute();
      xRoot.ElementName = "OverriddenRootElementName";
      xRoot.Namespace = "http://www.microsoft.com";

      // Set the XmlRoot property to the XmlRoot object.
      attrs.XmlRoot = xRoot;
      XmlAttributeOverrides xOver = new XmlAttributeOverrides();
      
      /* Add the XmlAttributes object to the 
      XmlAttributeOverrides object. */
      xOver.Add(typeof(MyClass), attrs);

      // Create the Serializer, and return it.
      XmlSerializer xSer = new XmlSerializer
      (typeof(MyClass), xOver);
      return xSer;
   }
}

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

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

// This is the class that is the default root element.
public ref class MyClass
{
public:
   String^ Name;
};

XmlSerializer^ CreateOverrider();
void SerializeOrder( String^ filename )
{
   // Create an XmlSerializer instance using the method below.
   XmlSerializer^ xSer = CreateOverrider();

   // Create the object, and set its Name property.
   MyClass^ myClass = gcnew MyClass;
   myClass->Name = "New Class Name";

   // Serialize the class, and close the TextWriter.
   TextWriter^ writer = gcnew StreamWriter( filename );
   xSer->Serialize( writer, myClass );
   writer->Close();
}

// Return an XmlSerializer to override the root serialization.
XmlSerializer^ CreateOverrider()
{
   // Create an XmlAttributes to override the default root element.
   XmlAttributes^ attrs = gcnew XmlAttributes;

   // Create an XmlRootAttribute and set its element name and namespace.
   XmlRootAttribute^ xRoot = gcnew XmlRootAttribute;
   xRoot->ElementName = "OverriddenRootElementName";
   xRoot->Namespace = "http://www.microsoft.com";

   // Set the XmlRoot property to the XmlRoot object.
   attrs->XmlRoot = xRoot;
   XmlAttributeOverrides^ xOver = gcnew XmlAttributeOverrides;

   /* Add the XmlAttributes object to the 
      XmlAttributeOverrides object. */
   xOver->Add( MyClass::typeid, attrs );

   // Create the Serializer, and return it.
   XmlSerializer^ xSer = gcnew XmlSerializer( MyClass::typeid,xOver );
   return xSer;
}

int main()
{
   SerializeOrder( "OverrideAttribute.xml" );
}
import System.*;
import System.IO.*;
import System.Xml.Serialization.*;

// This is the class that is the default root element.
public class MyClass
{
    public String name;
} //MyClass

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

    public void SerializeOrder(String fileName)
    {
        // Create an XmlSerializer instance using the method below.
        XmlSerializer xSer = CreateOverrider();

        // Create the object, and set its Name property.
        MyClass myClass = new MyClass();
        myClass.name = "New Class Name";

        // Serialize the class, and close the TextWriter.
        TextWriter writer = new StreamWriter(fileName);
        xSer.Serialize(writer, myClass);
        writer.Close();
    } //SerializeOrder

    // Return an XmlSerializer to override the root serialization.
    public XmlSerializer CreateOverrider()
    {
        // Create an XmlAttributes to override the default root element.
        XmlAttributes attrs = new XmlAttributes();

        // Create an XmlRootAttribute and set its element name and namespace.
        XmlRootAttribute xRoot = new XmlRootAttribute();
        xRoot.set_ElementName("OverriddenRootElementName");
        xRoot.set_Namespace("http://www.microsoft.com");

        // Set the XmlRoot property to the XmlRoot object.
        attrs.set_XmlRoot(xRoot);
        XmlAttributeOverrides xOver = new XmlAttributeOverrides();

        /* Add the XmlAttributes object to the 
           XmlAttributeOverrides object. */
        xOver.Add(MyClass.class.ToType(), attrs);

        // Create the Serializer, and return it.
        XmlSerializer xSer = new XmlSerializer(MyClass.class.ToType(),
 xOver);
        return xSer;
    } //CreateOverrider
} //Run
プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照
関連項目
XmlRootAttribute クラス
XmlRootAttribute メンバ
System.Xml.Serialization 名前空間
XmlAttributes.XmlRoot プロパティ
XmlAttributeOverrides クラス

XmlRootAttribute コンストラクタ (String)

XmlRootAttribute クラス新しインスタンス初期化しXML ルート要素の名前を指定します

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

Public Sub New ( _
    elementName As String _
)
Dim elementName As String

Dim instance As New XmlRootAttribute(elementName)
public XmlRootAttribute (
    string elementName
)
public:
XmlRootAttribute (
    String^ elementName
)
public XmlRootAttribute (
    String elementName
)
public function XmlRootAttribute (
    elementName : String
)

パラメータ

elementName

XML ルート要素の名前。

使用例使用例

次の例では、XmlRootAttribute のインスタンス作成し、そのインスタンス使用して、"Student" というクラスインスタンスシリアル化オーバーライドます。

Public Sub SerializeOrder(filename As
 String)
   ' Create an XmlSerializer instance using the method below.
   Dim myXmlSerializer As XmlSerializer = CreateOverrider()

   ' Create the object, and set its Name property.
   Dim myStudent As New
 Student()
   myStudent.Name = "Student class1"

   ' Serialize the class, and close the TextWriter.
   Dim writer = New StreamWriter(filename)
   myXmlSerializer.Serialize(writer, myStudent)
   writer.Close()
End Sub

' Return an XmlSerializer to override the root serialization.
Public Function CreateOverrider() As
 XmlSerializer
   ' Create an XmlAttributes to override the default root element.
   Dim myXmlAttributes As New
 XmlAttributes()

   ' Create an XmlRootAttribute overloaded constructer and set its namespace.
   Dim myXmlRootAttribute As New
 XmlRootAttribute("OverriddenRootElementName")
   myXmlRootAttribute.Namespace = "http://www.microsoft.com"

   ' Set the XmlRoot property to the XmlRoot object.
   myXmlAttributes.XmlRoot = myXmlRootAttribute
   Dim myXmlAttributeOverrides As New
 XmlAttributeOverrides()

   ' Add the XmlAttributes object to the XmlAttributeOverrides object.
   myXmlAttributeOverrides.Add(GetType(Student), myXmlAttributes)

   ' Create the Serializer, and return it.
   Dim myXmlSerializer As New
 XmlSerializer(GetType(Student), myXmlAttributeOverrides)
   Return myXmlSerializer
End Function
public void SerializeOrder(string
 filename)
{
   // Create an XmlSerializer instance using the method below.
   XmlSerializer myXmlSerializer = CreateOverrider();

   // Create the object, and set its Name property.
   Student myStudent = new Student();
   myStudent.Name = "Student class1";

   // Serialize the class, and close the TextWriter.
   TextWriter writer = new StreamWriter(filename);
   myXmlSerializer.Serialize(writer, myStudent);
   writer.Close();
}

// Return an XmlSerializer to override the root serialization.
public XmlSerializer CreateOverrider()
{
   // Create an XmlAttributes to override the default root element.
   XmlAttributes myXmlAttributes = new XmlAttributes();

   // Create an XmlRootAttribute overloaded constructer 
   //and set its namespace.
   XmlRootAttribute myXmlRootAttribute = 
                  new XmlRootAttribute("OverriddenRootElementName");
   myXmlRootAttribute.Namespace = "http://www.microsoft.com";

   // Set the XmlRoot property to the XmlRoot object.
   myXmlAttributes.XmlRoot = myXmlRootAttribute;
   XmlAttributeOverrides myXmlAttributeOverrides = 
                                       new XmlAttributeOverrides();
   
   /* Add the XmlAttributes object to the 
   XmlAttributeOverrides object. */
   myXmlAttributeOverrides.Add(typeof(Student), myXmlAttributes);

   // Create the Serializer, and return it.
   XmlSerializer myXmlSerializer = new XmlSerializer
      (typeof(Student), myXmlAttributeOverrides);
   return myXmlSerializer;
}
public:
   void SerializeOrder( String^ filename )
   {
      // Create an XmlSerializer instance using the method below.
      XmlSerializer^ myXmlSerializer = CreateOverrider();
      
      // Create the object, and set its Name property.
      Student^ myStudent = gcnew Student;
      myStudent->Name = "Student class1";
      
      // Serialize the class, and close the TextWriter.
      TextWriter^ writer = gcnew StreamWriter( filename );
      myXmlSerializer->Serialize( writer, myStudent );
      writer->Close();
   }

   // Return an XmlSerializer to  the root serialization.
   XmlSerializer^ CreateOverrider()
   {
      // Create an XmlAttributes to  the default root element.
      XmlAttributes^ myXmlAttributes = gcnew XmlAttributes;
      
      // Create an XmlRootAttribute overloaded constructer 
      // and set its namespace.
      XmlRootAttribute^ myXmlRootAttribute =
         gcnew XmlRootAttribute( "OverriddenRootElementName" );
      myXmlRootAttribute->Namespace = "http://www.microsoft.com";
      
      // Set the XmlRoot property to the XmlRoot object.
      myXmlAttributes->XmlRoot = myXmlRootAttribute;
      XmlAttributeOverrides^ myXmlAttributeOverrides =
         gcnew XmlAttributeOverrides;
      
      // Add the XmlAttributes object to the XmlAttributeOverrides object
      myXmlAttributeOverrides->Add( Student::typeid, myXmlAttributes );
      
      // Create the Serializer, and return it.
      XmlSerializer^ myXmlSerializer = gcnew XmlSerializer(
         Student::typeid, myXmlAttributeOverrides );
      return myXmlSerializer;
   }
public void SerializeOrder(String fileName)
{
    // Create an XmlSerializer instance using the method below.
    XmlSerializer myXmlSerializer = CreateOverrider();
    // Create the object, and set its name property.
    Student myStudent = new Student();
    myStudent.name = "Student class1";
    // Serialize the class, and close the TextWriter.
    TextWriter writer = new StreamWriter(fileName);
    myXmlSerializer.Serialize(writer, myStudent);
    writer.Close();
} //SerializeOrder

// Return an XmlSerializer to override the root serialization.
public XmlSerializer CreateOverrider()
{
    // Create an XmlAttributes to override the default root element.
    XmlAttributes myXmlAttributes = new XmlAttributes();
    // Create an XmlRootAttribute overloaded constructer 
    //and set its namespace.
    XmlRootAttribute myXmlRootAttribute = new XmlRootAttribute(
        "OverriddenRootElementName");
    myXmlRootAttribute.set_Namespace("http://www.microsoft.com");
    // Set the XmlRoot property to the XmlRoot object.
    myXmlAttributes.set_XmlRoot(myXmlRootAttribute);
    XmlAttributeOverrides myXmlAttributeOverrides =
        new XmlAttributeOverrides();

    /* Add the XmlAttributes object to the 
       XmlAttributeOverrides object.
     */
    myXmlAttributeOverrides.Add(Student.class.ToType(), myXmlAttributes);
    // Create the Serializer, and return it.
    XmlSerializer myXmlSerializer = new XmlSerializer(
        Student.class.ToType(), myXmlAttributeOverrides);
    return myXmlSerializer;
} //CreateOverrider
プラットフォームプラットフォーム
バージョン情報バージョン情報
参照参照
関連項目
XmlRootAttribute クラス
XmlRootAttribute メンバ
System.Xml.Serialization 名前空間
ElementName

XmlRootAttribute コンストラクタ

XmlRootAttribute クラス新しインスタンス初期化し、そのクラス名XML ルート要素の名前として使用します
オーバーロードの一覧オーバーロードの一覧

参照参照

関連項目

XmlRootAttribute クラス
XmlRootAttribute メンバ
System.Xml.Serialization 名前空間
XmlAttributes.XmlRoot プロパティ
XmlAttributeOverrides クラス



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