XmlNodeEventArgs Class
Provides data for the UnknownNode event.
For a list of all members of this type, see XmlNodeEventArgs Members.
System.Object
System.EventArgs
System.Xml.Serialization.XmlNodeEventArgs
[Visual Basic] Public Class XmlNodeEventArgs Inherits EventArgs [C#] public class XmlNodeEventArgs : EventArgs [C++] public __gc class XmlNodeEventArgs : public EventArgs [JScript] public class XmlNodeEventArgs extends EventArgs
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Remarks
For more information about handling events, see Consuming Events.
The UnknownNode event can occur only when you call the Deserialize method.
Example
[Visual Basic, C#, C++] The following example uses the UnknownNode event of the XmlSerializer to print various properties of an unknown XML node that is encountered when calling the XmlSerializer class's Deserialize method.
[Visual Basic] Imports System Imports System.IO Imports System.Xml Imports System.Xml.Serialization Public Class Group ' Only the GroupName field will be known. Public GroupName As String End Class Public Class Test Shared Sub Main() Dim t As Test = New Test() t.DeserializeObject("UnknownNodes.xml") End Sub Private Sub DeserializeObject(filename As String ) Dim mySerializer As XmlSerializer = New XmlSerializer(GetType(Group)) Dim fs As FileStream = New FileStream(filename, FileMode.Open) AddHandler mySerializer.UnknownNode, _ AddressOf serializer_UnknownNode Dim myGroup As Group = _ CType(mySerializer.Deserialize(fs), Group) fs.Close() End Sub Protected Sub serializer_UnknownNode _ (sender As object , e As XmlNodeEventArgs ) 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) Dim myNodeType As XmlNodeType = e.NodeType Console.WriteLine("NodeType: {0}", myNodeType) Dim myGroup As Group = CType(e.ObjectBeingDeserialized, Group) Console.WriteLine("GroupName: {0}", myGroup.GroupName) Console.WriteLine() End Sub End Class ' Paste this XML into a file named UnknownNodes: '<?xml version="1.0" encoding="utf-8"?> '<Group xmlns:xsi="http:'www.w3.org/2001/XMLSchema-instance" 'xmlns:xsd="http:'www.w3.org/2001/XMLSchema" xmlns:coho = "http:'www.cohowinery.com" 'xmlns:cp="http:'www.cpandl.com"> ' <coho:GroupName>MyGroup</coho:GroupName> ' <cp:GroupSize>Large</cp:GroupSize> ' <cp:GroupNumber>444</cp:GroupNumber> ' <coho:GroupBase>West</coho:GroupBase> ' <coho:ThingInfo> ' <Number>1</Number> ' <Name>Thing1</Name> ' <Elmo> ' <Glue>element</Glue> ' </Elmo> ' </coho:ThingInfo> '/Group> [C#] using System; using System.IO; using System.Xml; using System.Xml.Serialization; public class Group{ // Only the GroupName field will be known. public string GroupName; } public class Test{ static void Main(){ Test t = new Test(); t.DeserializeObject("UnknownNodes.xml"); } private void DeserializeObject(string filename){ XmlSerializer mySerializer = new XmlSerializer(typeof(Group)); FileStream fs = new FileStream(filename, FileMode.Open); mySerializer.UnknownNode += new XmlNodeEventHandler(serializer_UnknownNode); Group myGroup = (Group) mySerializer.Deserialize(fs); fs.Close(); } protected 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); XmlNodeType myNodeType = e.NodeType; Console.WriteLine("NodeType: {0}", myNodeType); Group myGroup = (Group) e.ObjectBeingDeserialized; Console.WriteLine("GroupName: {0}", myGroup.GroupName); Console.WriteLine(); } } /* Paste this XML into a file named UnknownNodes: <?xml version="1.0" encoding="utf-8"?> <Group xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:coho = "http://www.cohowinery.com" xmlns:cp="http://www.cpandl.com"> <coho:GroupName>MyGroup</coho:GroupName> <cp:GroupSize>Large</cp:GroupSize> <cp:GroupNumber>444</cp:GroupNumber> <coho:GroupBase>West</coho:GroupBase> <coho:ThingInfo> <Number>1</Number> <Name>Thing1</Name> <Elmo> <Glue>element</Glue> </Elmo> </coho:ThingInfo> </Group> */ [C++] #using <mscorlib.dll> #using <System.Xml.dll> using namespace System; using namespace System::IO; using namespace System::Xml; using namespace System::Xml::Serialization; public __gc class Group{ // Only the GroupName field will be known. public: String* GroupName; }; public __gc class Test{ public: static void main(){ Test* t = new Test(); t->DeserializeObject(S"UnknownNodes.xml"); } private: void DeserializeObject(String* filename){ XmlSerializer* mySerializer = new XmlSerializer(__typeof(Group)); FileStream* fs = new FileStream(filename, FileMode::Open); mySerializer->UnknownNode += new XmlNodeEventHandler(this, &Test::serializer_UnknownNode); Group* myGroup = dynamic_cast<Group*> (mySerializer->Deserialize(fs)); fs->Close(); } protected: void serializer_UnknownNode (Object* /*sender*/, XmlNodeEventArgs* e){ Console::WriteLine(S"UnknownNode Name: {0}",e->Name); Console::WriteLine(S"UnknownNode LocalName: {0}",e->LocalName); Console::WriteLine(S"UnknownNode Namespace URI: {0}",e->NamespaceURI); Console::WriteLine(S"UnknownNode Text: {0}",e->Text); XmlNodeType myNodeType = e->NodeType; Console::WriteLine(S"NodeType: {0}", __box(myNodeType)); Group* myGroup = dynamic_cast<Group*> (e->ObjectBeingDeserialized); Console::WriteLine(S"GroupName: {0}",myGroup->GroupName); Console::WriteLine(); } }; int main() { Test::main(); } /* Paste this XML into a file named UnknownNodes: <?xml version="1.0" encoding="utf-8"?> <Group xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:coho = "http://www.cohowinery.com" xmlns:cp="http://www.cpandl.com"> <coho:GroupName>MyGroup</coho:GroupName> <cp:GroupSize>Large</cp:GroupSize> <cp:GroupNumber>444</cp:GroupNumber> <coho:GroupBase>West</coho:GroupBase> <coho:ThingInfo> <Number>1</Number> <Name>Thing1</Name> <Elmo> <Glue>element</Glue> </Elmo> </coho:ThingInfo> </Group> */
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Requirements
Namespace: System.Xml.Serialization
Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
Assembly: System.Xml (in System.Xml.dll)
See Also
XmlNodeEventArgs Members | System.Xml.Serialization Namespace | Deserialize | XmlSerializer | XmlAttributeEventArgs