XmlAttributes.XmlElements プロパティ
定義
重要
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XmlSerializer がパブリック フィールドまたは読み取り/書き込みプロパティを XML 要素としてシリアル化する方法を指定する、オブジェクトのコレクションを取得します。
public:
property System::Xml::Serialization::XmlElementAttributes ^ XmlElements { System::Xml::Serialization::XmlElementAttributes ^ get(); };public System.Xml.Serialization.XmlElementAttributes XmlElements { get; }member this.XmlElements : System.Xml.Serialization.XmlElementAttributesPublic ReadOnly Property XmlElements As XmlElementAttributesプロパティ値
XmlElementAttributes オブジェクトのコレクションを格納している XmlElementAttribute。
例
次の例では、クラスをTransportationシリアル化します。このクラスにはVehiclesArrayList、. この例では、フィールドに 2 つの XmlElementAttribute 属性を Vehicles 適用します。 この例では、2 つのXmlElementAttributeオブジェクトを作成し、オブジェクトのコレクションにXmlElementAttributesXmlAttributes追加します。 配列が異なるオブジェクト型を受け入れるようにするために、 XmlAttributes オブジェクトがオブジェクトに XmlAttributeOverrides 追加されます。
#using <System.Xml.dll>
#using <System.dll>
using namespace System;
using namespace System::IO;
using namespace System::Xml::Serialization;
using namespace System::Collections;
using namespace System::Xml;
public ref class Car
{
public:
String^ Name;
};
public ref class Plane
{
public:
String^ Name;
};
public ref class Truck
{
public:
String^ Name;
};
public ref class Train
{
public:
String^ Name;
};
public ref class Transportation
{
public:
// Subsequent code overrides these two XmlElementAttributes.
[XmlElement(Car::typeid),
XmlElement(Plane::typeid)]
ArrayList^ Vehicles;
};
// Return an XmlSerializer used for overriding.
XmlSerializer^ CreateOverrider()
{
// Create the XmlAttributes and XmlAttributeOverrides objects.
XmlAttributes^ attrs = gcnew XmlAttributes;
XmlAttributeOverrides^ xOver = gcnew XmlAttributeOverrides;
/* Create an XmlElementAttribute to override
the Vehicles property. */
XmlElementAttribute^ xElement1 = gcnew XmlElementAttribute( Truck::typeid );
// Add the XmlElementAttribute to the collection.
attrs->XmlElements->Add( xElement1 );
/* Create a second XmlElementAttribute, and
add it to the collection. */
XmlElementAttribute^ xElement2 = gcnew XmlElementAttribute( Train::typeid );
attrs->XmlElements->Add( xElement2 );
/* Add the XmlAttributes to the XmlAttributeOverrides,
specifying the member to override. */
xOver->Add( Transportation::typeid, "Vehicles", attrs );
// Create the XmlSerializer, and return it.
XmlSerializer^ xSer = gcnew XmlSerializer( Transportation::typeid,xOver );
return xSer;
}
void SerializeObject( String^ filename )
{
// Create an XmlSerializer instance.
XmlSerializer^ xSer = CreateOverrider();
// Create the object and serialize it.
Transportation^ myTransportation = gcnew Transportation;
/* Create two new override objects that can be
inserted into the array. */
myTransportation->Vehicles = gcnew ArrayList;
Truck^ myTruck = gcnew Truck;
myTruck->Name = "MyTruck";
Train^ myTrain = gcnew Train;
myTrain->Name = "MyTrain";
myTransportation->Vehicles->Add( myTruck );
myTransportation->Vehicles->Add( myTrain );
TextWriter^ writer = gcnew StreamWriter( filename );
xSer->Serialize( writer, myTransportation );
}
int main()
{
SerializeObject( "OverrideElement.xml" );
}
using System;
using System.IO;
using System.Xml.Serialization;
using System.Collections;
using System.Xml;
public class Transportation
{
// Subsequent code overrides these two XmlElementAttributes.
[XmlElement(typeof(Car)),
XmlElement(typeof(Plane))]
public ArrayList Vehicles;
}
public class Car
{
public string Name;
}
public class Plane
{
public string Name;
}
public class Truck
{
public string Name;
}
public class Train
{
public string Name;
}
public class Test
{
public static void Main()
{
Test t = new Test();
t.SerializeObject("OverrideElement.xml");
}
// Return an XmlSerializer used for overriding.
public XmlSerializer CreateOverrider()
{
// Create the XmlAttributes and XmlAttributeOverrides objects.
XmlAttributes attrs = new XmlAttributes();
XmlAttributeOverrides xOver =
new XmlAttributeOverrides();
/* Create an XmlElementAttribute to override
the Vehicles property. */
XmlElementAttribute xElement1 =
new XmlElementAttribute(typeof(Truck));
// Add the XmlElementAttribute to the collection.
attrs.XmlElements.Add(xElement1);
/* Create a second XmlElementAttribute, and
add it to the collection. */
XmlElementAttribute xElement2 =
new XmlElementAttribute(typeof(Train));
attrs.XmlElements.Add(xElement2);
/* Add the XmlAttributes to the XmlAttributeOverrides,
specifying the member to override. */
xOver.Add(typeof(Transportation), "Vehicles", attrs);
// Create the XmlSerializer, and return it.
XmlSerializer xSer = new XmlSerializer
(typeof(Transportation), xOver);
return xSer;
}
public void SerializeObject(string filename)
{
// Create an XmlSerializer instance.
XmlSerializer xSer = CreateOverrider();
// Create the object and serialize it.
Transportation myTransportation =
new Transportation();
/* Create two new override objects that can be
inserted into the array. */
myTransportation.Vehicles = new ArrayList();
Truck myTruck = new Truck();
myTruck.Name = "MyTruck";
Train myTrain = new Train();
myTrain.Name = "MyTrain";
myTransportation.Vehicles.Add(myTruck);
myTransportation.Vehicles.Add(myTrain);
TextWriter writer = new StreamWriter(filename);
xSer.Serialize(writer, myTransportation);
}
}
Imports System.IO
Imports System.Xml.Serialization
Imports System.Collections
Imports System.Xml
Public Class Transportation
' Subsequent code overrides these two XmlElementAttributes.
<XmlElement(GetType(Car)), _
XmlElement(GetType(Plane))> _
Public Vehicles As ArrayList
End Class
Public Class Car
Public Name As String
End Class
Public Class Plane
Public Name As String
End Class
Public Class Truck
Public Name As String
End Class
Public Class Train
Public Name As String
End Class
Public Class Test
Public Shared Sub Main()
Dim t As New Test()
t.SerializeObject("OverrideElement.xml")
End Sub
' Return an XmlSerializer used for overriding.
Public Function CreateOverrider() As XmlSerializer
' Create the XmlAttributes and XmlAttributeOverrides objects.
Dim attrs As New XmlAttributes()
Dim xOver As New XmlAttributeOverrides()
' Create an XmlElementAttribute to override
' the Vehicles property.
Dim xElement1 As New XmlElementAttribute(GetType(Truck))
' Add the XmlElementAttribute to the collection.
attrs.XmlElements.Add(xElement1)
' Create a second XmlElementAttribute, and
' add it to the collection.
Dim xElement2 As New XmlElementAttribute(GetType(Train))
attrs.XmlElements.Add(xElement2)
' Add the XmlAttributes to the XmlAttributeOverrides,
' specifying the member to override.
xOver.Add(GetType(Transportation), "Vehicles", attrs)
' Create the XmlSerializer, and return it.
Dim xSer As New XmlSerializer(GetType(Transportation), xOver)
Return xSer
End Function
Public Sub SerializeObject(ByVal filename As String)
' Create an XmlSerializer instance.
Dim xSer As XmlSerializer = CreateOverrider()
' Create the object and serialize it.
Dim myTransportation As New Transportation()
' Create two new override objects that can be'
' inserted into the array.
myTransportation.Vehicles = New ArrayList()
Dim myTruck As New Truck()
myTruck.Name = "MyTruck"
Dim myTrain As New Train()
myTrain.Name = "MyTrain"
myTransportation.Vehicles.Add(myTruck)
myTransportation.Vehicles.Add(myTrain)
Dim writer As New StreamWriter(filename)
xSer.Serialize(writer, myTransportation)
End Sub
End Class
注釈
XML 要素としてシリアル化されるオーバーライドされたメンバーごとに、メソッドを呼び出して新しい XmlElementAttribute メンバーを XmlElementAttributes 追加する Add 必要があります。 既定では、 XmlElementAttributes オブジェクトが作成され、プロパティに XmlElements 割り当てられます。