XmlNodeEventHandler 代理人

定義

UnknownNodeXmlSerializer イベントを処理するメソッドを表します。Represents the method that handles the UnknownNode event of an XmlSerializer.

public delegate void XmlNodeEventHandler(System::Object ^ sender, XmlNodeEventArgs ^ e);
public delegate void XmlNodeEventHandler(object sender, XmlNodeEventArgs e);
type XmlNodeEventHandler = delegate of obj * XmlNodeEventArgs -> unit
Public Delegate Sub XmlNodeEventHandler(sender As Object, e As XmlNodeEventArgs)

パラメーター

sender
Object

イベントのソース。The source of the event.

e
XmlNodeEventArgs

イベント データを格納している XmlNodeEventArgsAn XmlNodeEventArgs that contains the event data.

継承
XmlNodeEventHandler

次の例では、XmlSerializerを作成し、UnknownNode イベントのイベントハンドラーを追加して、オブジェクトを逆シリアル化します。The following example creates an XmlSerializer, adds an event handler for the UnknownNode event, and deserializes an object.

private:
   void DeserializeItem( String^ filename )
   {
      XmlSerializer^ mySerializer = gcnew XmlSerializer( ObjectToDeserialize::typeid );

      // Add an instance of the delegate to the event.
      mySerializer->UnknownNode += gcnew XmlNodeEventHandler( this, &Class1::Serializer_UnknownNode );

      // A FileStream is needed to read the file to deserialize.
      FileStream^ fs = gcnew FileStream( filename,FileMode::Open );
      ObjectToDeserialize^ o = dynamic_cast<ObjectToDeserialize^>(mySerializer->Deserialize( fs ));
   }

   void Serializer_UnknownNode( Object^ sender, XmlNodeEventArgs^ e )
   {
      Console::WriteLine( "UnknownNode Name: {0}", e->Name );
      Console::WriteLine( "UnknownNode LocalName: {0}", e->LocalName );
      Console::WriteLine( "UnknownNode Namespace URI: {0}", e->NamespaceURI );
      Console::WriteLine( "UnknownNode Text: {0}", e->Text );
      Object^ o = e->ObjectBeingDeserialized;
      Console::WriteLine( "Object being deserialized {0}", o );
      XmlNodeType myNodeType = e->NodeType;
      Console::WriteLine( myNodeType );
   }

private void DeserializeItem(string filename) {
    XmlSerializer mySerializer = 
        new XmlSerializer(typeof(ObjectToDeserialize));
    // Add an instance of the delegate to the event.
    mySerializer.UnknownNode += new XmlNodeEventHandler
        (Serializer_UnknownNode);
    // A FileStream is needed to read the file to deserialize.
    FileStream fs = new FileStream(filename, FileMode.Open);
    ObjectToDeserialize o = (ObjectToDeserialize)mySerializer.Deserialize(fs);
}
 
private void Serializer_UnknownNode
    (object sender, XmlNodeEventArgs e) {
    
    Console.WriteLine("UnknownNode Name: "
                      + e.Name);
    Console.WriteLine("UnknownNode LocalName: "
                      + e.LocalName);
    Console.WriteLine("UnknownNode Namespace URI: "
                      + e.NamespaceURI);
    Console.WriteLine("UnknownNode Text: "
                      + e.Text);
 
    object o = e.ObjectBeingDeserialized;
    Console.WriteLine("Object being deserialized " 
                      + o.ToString());
       
    XmlNodeType myNodeType = e.NodeType;
    Console.WriteLine(myNodeType);
}

Private Sub DeserializeItem(ByVal filename As String)
    Dim mySerializer As New XmlSerializer(GetType(ObjectToDeserialize))
    ' Add an instance of the delegate to the event.
    AddHandler mySerializer.UnknownNode, AddressOf Serializer_UnknownNode
    ' A FileStream is needed to read the file to deserialize.
    Dim fs As New FileStream(filename, FileMode.Open)
    Dim o As ObjectToDeserialize = _
        CType(mySerializer.Deserialize(fs), ObjectToDeserialize)
End Sub


Private Sub Serializer_UnknownNode _
                (ByVal sender As Object, _
                 ByVal e As XmlNodeEventArgs)
    
    Console.WriteLine("UnknownNode Name: " & e.Name)
    Console.WriteLine("UnknownNode LocalName: " & e.LocalName)
    Console.WriteLine("UnknownNode Namespace URI: " & e.NamespaceURI)
    Console.WriteLine("UnknownNode Text: " & e.Text)
    
    Dim o As Object = e.ObjectBeingDeserialized
    Console.WriteLine("Object being deserialized " & o.ToString())
    
    Dim myNodeType As XmlNodeType = e.NodeType
    Console.WriteLine(myNodeType)
End Sub

注釈

XmlNodeEventHandler デリゲートを作成する場合は、イベントを処理するメソッドを指定します。When you create an XmlNodeEventHandler delegate, you identify the method that handles the event. イベントをイベント ハンドラーに関連付けるには、デリゲートのインスタンスをイベントに追加します。To associate the event with your event handler, add an instance of the delegate to the event. デリゲートを削除しない限り、そのイベントが発生すると常にイベント ハンドラーが呼び出されます。The event handler is called whenever the event occurs, unless you remove the delegate. イベントハンドラーデリゲートの詳細については、「イベントの処理と発生」を参照してください。For more information about event handler delegates, see Handling and Raising Events.

UnknownNode イベントは、Deserialize メソッドを呼び出した場合にのみ発生します。The UnknownNode event occurs only when you call the Deserialize method.

拡張メソッド

GetMethodInfo(Delegate)

指定したデリゲートによって表されるメソッドを表すオブジェクトを取得します。Gets an object that represents the method represented by the specified delegate.

適用対象

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