XmlNodeEventArgs Class
Assembly: System.Xml (in system.xml.dll)
For more information about handling events, see Consuming Events.
The UnknownNode event can occur only when you call the Deserialize method.
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.
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(); } private 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> */
import System.*;
import System.IO.*;
import System.Xml.*;
import System.Xml.Serialization.*;
public class Group
{
// Only the GroupName field will be known.
public String groupName;
} //Group
public class Test
{
public static void main(String[] args)
{
Test t = new Test();
t.DeserializeObject("UnknownNodes.xml");
} //main
private void DeserializeObject(String filename)
{
XmlSerializer mySerializer = new XmlSerializer(Group.class.ToType());
FileStream fs = new FileStream(filename, FileMode.Open);
mySerializer.add_UnknownNode(new XmlNodeEventHandler
(SerializerUnknownNode));
Group myGroup = (Group)mySerializer.Deserialize(fs);
fs.Close();
} //DeserializeObject
private void SerializerUnknownNode(Object sender, XmlNodeEventArgs e)
{
Console.WriteLine("UnknownNode Name: {0}", e.get_Name());
Console.WriteLine("UnknownNode LocalName: {0}", e.get_LocalName());
Console.WriteLine("UnknownNode Namespace URI: {0}",
e.get_NamespaceURI());
Console.WriteLine("UnknownNode Text: {0}", e.get_Text());
XmlNodeType myNodeType = e.get_NodeType();
Console.WriteLine("NodeType: {0}", myNodeType);
Group myGroup = (Group)e.get_ObjectBeingDeserialized();
Console.WriteLine("GroupName: {0}", myGroup.groupName);
Console.WriteLine();
} //SerializerUnknownNode
} //Test
/* 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>
*/
Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.