UnreferencedObjectEventArgs Class
Provides data for the known, but unreferenced, object found in an encoded SOAP XML stream during deserialization.
Assembly: System.Xml (in System.Xml.dll)
The UnreferencedObjectEventArgs type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() | UnreferencedObjectEventArgs | Initializes a new instance of the UnreferencedObjectEventArgs class. |
| Name | Description | |
|---|---|---|
![]() ![]() | UnreferencedId | Gets the ID of the object. |
![]() ![]() | UnreferencedObject | Gets the deserialized, but unreferenced, object. |
| Name | Description | |
|---|---|---|
![]() ![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() ![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() ![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() ![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() ![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
For more information about the UnreferencedObjectEventArgs class, see the UnreferencedObject event of the XmlSerializer.
The UnreferencedObject event occurs only when you call the Deserialize method.
For more information about handling events, see Events Overview (Windows Forms)
The following example adds an UnreferencedObjectEventHandler to an XmlSerializer. The event is handled by the Serializer_UnreferencedObject method. To run the example, cut and paste the following XML into a file named UnrefObj.xml.
<wrapper>
<Group xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" id="id1" n1:GroupName=".NET" xmlns:n1="http://www.cpandl.com">
</Group>
<Vehicle id="id2" n1:type="Vehicle" xmlns:n1="http://www.w3.org/2001/XMLSchema-instance">
<licenseNumber xmlns:q1="http://www.w3.org/2001/XMLSchema" n1:type="q1:string">ABCD</licenseNumber>
</Vehicle>
<Vehicle id="id3" n1:type="Vehicle" xmlns:n1="http://www.w3.org/2001/XMLSchema-instance">
<licenseNumber xmlns:q1="http://www.w3.org/2001/XMLSchema" n1:type="q1:string">1234</licenseNumber>
</Vehicle>
</wrapper>
Imports System Imports System.IO Imports System.Text Imports System.Xml Imports System.Xml.Serialization Imports System.Xml.Schema ' You must use the SoapIncludeAttribute to inform the XmlSerializer ' that the Vehicle type should be recognized when deserializing. <SoapInclude(GetType(Vehicle))> _ Public Class Group Public GroupName As String public GroupVehicle As Vehicle End Class Public Class Vehicle Public licenseNumber As String End Class Public Class Run Shared Sub Main() Dim test As Run = new Run() test.DeserializeObject("UnrefObj.xml") End Sub Public Sub DeserializeObject(filename As String) ' Create an instance of the XmlSerializer class. Dim myMapping As XmlTypeMapping = _ (new SoapReflectionImporter().ImportTypeMapping _ (GetType(Group))) Dim mySerializer As XmlSerializer = _ new XmlSerializer(myMapping) AddHandler mySerializer.UnreferencedObject, _ AddressOf Serializer_UnreferencedObject ' Reading the file requires an XmlTextReader. Dim reader As XmlTextReader = _ new XmlTextReader(filename) reader.ReadStartElement() ' Deserialize and cast the object. Dim myGroup As Group myGroup = CType( mySerializer.Deserialize(reader), Group) reader.ReadEndElement() reader.Close() End Sub Private Sub Serializer_UnreferencedObject _ (sender As object , e As UnreferencedObjectEventArgs) Console.WriteLine("UnreferencedObject:") Console.WriteLine("ID: " + e.UnreferencedId) Console.WriteLine("UnreferencedObject: " + e.UnreferencedObject) Dim myVehicle As Vehicle = CType(e.UnreferencedObject, Vehicle) Console.WriteLine("License: " + myVehicle.licenseNumber) End Sub End Class ' The XML document should contain this information: '<wrapper> ' <Group xmlns:xsi="http:'www.w3.org/2001/XMLSchema-instance" 'xmlns:xsd="http:'www.w3.org/2001/XMLSchema" id="id1" 'n1:GroupName=".NET" xmlns:n1="http:'www.cpandl.com"> ' </Group> '<Vehicle id="id2" n1:type="Vehicle" 'xmlns:n1="http:'www.w3.org/2001/XMLSchema-instance"> ' <licenseNumber xmlns:q1="http:'www.w3.org/2001/XMLSchema" 'n1:type="q1:string">ABCD</licenseNumber> ' </Vehicle> '<Vehicle id="id3" n1:type="Vehicle" 'xmlns:n1="http:'www.w3.org/2001/XMLSchema-instance"> ' <licenseNumber xmlns:q1="http:'www.w3.org/2001/XMLSchema" 'n1:type="q1:string">1234</licenseNumber> ' </Vehicle> '</wrapper>
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.



