XmlAnyElementAttributes::Add Method (XmlAnyElementAttribute^)
Adds an XmlAnyElementAttribute to the collection.
Assembly: System.Xml (in System.Xml.dll)
Parameters
- attribute
-
Type:
System.Xml.Serialization::XmlAnyElementAttribute^
The XmlAnyElementAttribute to add.
The following example creates a new XmlAnyElementAttribute and adds it to the collection of objects accessed through the XmlAnyElements property. The XmlAttributes is then added to an XmlAttributeOverrides, which is used to create an XmlSerializer. The XmlSerializer is used to serialize or deserialize an object. To see the effect of using the XmlAnyElementAttributes property, create an XML document named UnknownElements.xml by running the SerializeObject method in the Main method. Edit the resulting document to include other (unknown) elements. Comment out the SerializeObject call in the Main method, and uncomment the call to the DeserializeObject method, which prints out the name and value of any unknown XML element.
#using <System.dll> #using <System.xml.dll> using namespace System; using namespace System::IO; using namespace System::Xml::Serialization; using namespace System::Xml; public ref class Group { public: String^ GroupName; [XmlAnyElement] array<Object^>^Things; }; void SerializeObject( String^ filename ); void DeserializeObject( String^ filename ); XmlSerializer^ CreateOverrideSerializer(); int main() { // 1 Run this and create the XML document. // 2 Add new elements to the XML document. // 3 Comment out the next line, and uncomment // the DeserializeObject line to deserialize the // XML document and see unknown elements. SerializeObject( "UnknownElements.xml" ); // DeserializeObject(S"UnknownElements.xml"); } void SerializeObject( String^ filename ) { XmlSerializer^ ser = gcnew XmlSerializer( Group::typeid ); TextWriter^ writer = gcnew StreamWriter( filename ); Group^ g = gcnew Group; g->GroupName = "MyGroup"; ser->Serialize( writer, g ); writer->Close(); } void DeserializeObject( String^ filename ) { XmlSerializer^ ser = CreateOverrideSerializer(); // A FileStream is needed to read the XML document. FileStream^ fs = gcnew FileStream( filename,FileMode::Open ); Group^ g = safe_cast<Group^>(ser->Deserialize( fs )); fs->Close(); Console::WriteLine( g->GroupName ); Console::WriteLine( g->Things->Length ); for ( int i = 0; i < g->Things->Length; ++i ) { XmlElement^ xelement = safe_cast<XmlElement^>(g->Things[ i ]); Console::WriteLine( "{0}: {1}", xelement->Name, xelement->InnerXml ); } } XmlSerializer^ CreateOverrideSerializer() { XmlAnyElementAttribute^ myAnyElement = gcnew XmlAnyElementAttribute; XmlAttributeOverrides^ xOverride = gcnew XmlAttributeOverrides; XmlAttributes^ xAtts = gcnew XmlAttributes; xAtts->XmlAnyElements->Add( myAnyElement ); xOverride->Add( Group::typeid, "Things", xAtts ); return gcnew XmlSerializer( Group::typeid,xOverride ); }
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1