XmlAttribute.Value プロパティとは何？わかりやすく解説 Weblio辞書

.NET Framework クラスライブラリリファレンス

索引トップ用語の索引ランキング

XmlAttribute.Value プロパティ

ノードの値を取得または設定します。

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

Visual Basic (宣言)

Public Overrides Property
 Value As String

Visual Basic (使用法)

Dim instance As XmlAttribute
Dim value As String

value = instance.Value

instance.Value = value

public override string Value { get;
 set; }

C++

public:
virtual property String^ Value {
    String^ get () override;
    void set (String^ value) override;
}

/** @property */
public String get_Value ()

/** @property */
public void set_Value (String value)

JScript

public override function get
 Value () : String

public override function set
 Value (value : String)

プロパティ値
返される値は、ノードの NodeType によって異なります。XmlAttribute ノードの場合、このプロパティは属性の値です。

例外

例外の種類	条件
ArgumentException	ノードが読み取り専用であり、set 操作が呼び出されます。

使用例

属性コレクションの各ノードに関する情報を表示する例を次に示します。

Visual Basic

Imports System
Imports System.IO
Imports System.Xml

public class Sample

  public shared sub Main()

    Dim doc as XmlDocument = new
 XmlDocument()
    doc.LoadXml("<book xmlns:bk='urn:samples' bk:genre='novel'>"
 & _
                "<title>Pride And Prejudice</title>"
 & _
                "</book>") 

    'Create an attribute collection.
    Dim attrColl as XmlAttributeCollection
 = doc.DocumentElement.Attributes

    Console.WriteLine("Display information on each of the attributes...
 ")
    Dim attr as XmlAttribute
    for each attr in attrColl
       Console.Write("{0}:{1} = {2}", attr.Prefix,
 attr.LocalName, attr.Value)
       Console.WriteLine("   namespaceURI=" + attr.NamespaceURI)
    next

  end sub
end class

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

public class Sample
{
  public static void Main(){
  
    XmlDocument doc = new XmlDocument();
    doc.LoadXml("<book xmlns:bk='urn:samples' bk:genre='novel'>"
 +
                "<title>Pride And Prejudice</title>" +
                "</book>");      

    //Create an attribute collection.
    XmlAttributeCollection attrColl = doc.DocumentElement.Attributes;

    Console.WriteLine("Display information on each of the attributes... \r\n");
    foreach (XmlAttribute attr in attrColl){
       Console.Write("{0}:{1} = {2}", attr.Prefix, attr.LocalName, attr.Value);
       Console.WriteLine("\t namespaceURI=" + attr.NamespaceURI);
    }
  }
}

C++

#using <System.Xml.dll>

using namespace System;
using namespace System::IO;
using namespace System::Xml;
int main()
{
   XmlDocument^ doc = gcnew XmlDocument;
   doc->LoadXml( "<book xmlns:bk='urn:samples' bk:genre='novel'><title>Pride
 And Prejudice</title></book>" );
   
   //Create an attribute collection.
   XmlAttributeCollection^ attrColl = doc->DocumentElement->Attributes;
   Console::WriteLine( "Display information on each of the attributes... \r\n"
 );
   System::Collections::IEnumerator^ myEnum = attrColl->GetEnumerator();
   while ( myEnum->MoveNext() )
   {
      XmlAttribute^ attr = safe_cast<XmlAttribute^>(myEnum->Current);
      Console::Write( "{0}:{1} = {2}", attr->Prefix, attr->LocalName,
 attr->Value );
      Console::WriteLine( "\t namespaceURI={0}", attr->NamespaceURI
 );
   }
}

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

public class Sample
{
    public static void main(String[]
 args)
    {
        XmlDocument doc = new XmlDocument();
        doc.LoadXml("<book xmlns:bk='urn:samples' bk:genre='novel'>"
            + "<title>Pride And Prejudice</title>"
            + "</book>");

        //Create an attribute collection.
        XmlAttributeCollection attrColl = 
            doc.get_DocumentElement().get_Attributes();

        Console.WriteLine("Display information on each of the"
            + " attributes... \r\n");
        for (int iCtr = 0; iCtr < attrColl.get_Count();
 iCtr++) {
            XmlAttribute attr = attrColl.get_ItemOf(iCtr);
            Console.Write("{0}:{1} = {2}", attr.get_Prefix(),
                attr.get_LocalName(), attr.get_Value());
            Console.WriteLine("\t namespaceURI=" + attr.get_NamespaceURI());
        }
    } //main
} //Sample