XmlNodeEventHandler 代理人
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
表示處理 UnknownNode 的 XmlSerializer 事件的方法。
public delegate void XmlNodeEventHandler(System::Object ^ sender, XmlNodeEventArgs ^ e);C#
public delegate void XmlNodeEventHandler(object? sender, XmlNodeEventArgs e);C#
public delegate void XmlNodeEventHandler(object sender, XmlNodeEventArgs e);type XmlNodeEventHandler = delegate of obj * XmlNodeEventArgs -> unitPublic Delegate Sub XmlNodeEventHandler(sender As Object, e As XmlNodeEventArgs)- sender
- Object
事件的來源。
包含事件資料的 XmlNodeEventArgs。
下列範例會 XmlSerializer 建立 、加入 事件的事件處理常式 UnknownNode ，並還原序列化 物件。
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 );
}
C#
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
當您建立 XmlNodeEventHandler 委派時，您會識別處理事件的方法。 若要使事件與您的事件處理常式產生關聯，請將委派的執行個體 (Instance) 加入至事件。 除非您移除委派，否則每當事件發生時就會呼叫事件處理常式。 如需事件處理常式委派的詳細資訊，請參閱 處理和引發事件。
UnknownNode只有在您呼叫 Deserialize 方法時，才會發生此事件。
|
Get |
取得表示特定委派所代表之方法的物件。 |
| 產品 | 版本 |
|---|---|
| .NET | Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
