XmlAnyAttributeAttribute Class
Specifies that the member (a field that returns an array of XmlAttribute objects) can contain any XML attributes.
Assembly: System.Xml (in System.Xml.dll)
The XmlAnyAttributeAttribute type exposes the following members.
| Name | Description | |
|---|---|---|
![]() ![]() | XmlAnyAttributeAttribute | Constructs a new instance of the XmlAnyAttributeAttribute class. |
| Name | Description | |
|---|---|---|
![]() ![]() | Equals | Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.) |
![]() ![]() | 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 | Returns the hash code for this instance. (Inherited from Attribute.) |
![]() ![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | IsDefaultAttribute | When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.) |
![]() ![]() | Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
![]() ![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() ![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
![]() ![]() | _Attribute.GetIDsOfNames | Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.) |
![]() ![]() | _Attribute.GetTypeInfo | Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.) |
![]() ![]() | _Attribute.GetTypeInfoCount | Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.) |
![]() ![]() | _Attribute.Invoke | Provides access to properties and methods exposed by an object. (Inherited from Attribute.) |
Use the XmlAnyAttributeAttribute to contain arbitrary data (as XML attributes) that is sent as part of an XML document, such as, metadata sent as part of the document.
Apply the XmlAnyAttributeAttribute to a field that returns an array of XmlAttribute or XmlNode objects. When the Deserialize method of the XmlSerializer class is called, all XML attributes that do not have a corresponding member in the class being deserialized are collected in the array. After deserialization, you can iterate through the collection of XmlAttribute items to process the data.
The UnknownNode and UnknownAttribute events of the XmlSerializer do not occur if you apply the XmlAnyAttributeAttribute to a member of a class.
Note |
|---|
You can use the word XmlAnyAttribute in your code instead of the longer XmlAnyAttributeAttribute. |
For more information about using attributes, see Extending Metadata Using Attributes.
The following example collects all unknown attributes into an array of XmlAttribute objects. To try the example, create a file named UnknownAttributes.xml that contains the following XML:
<?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" GroupType = 'Technical' GroupNumber = '42' GroupBase = 'Red'> <GroupName>MyGroup</GroupName> </Group>
Imports System Imports System.IO Imports System.Xml.Serialization Imports System.Xml Public Class Group Public GroupName As String ' The UnknownAttributes array will be used to collect all unknown ' attributes found when deserializing. <XmlAnyAttribute> _ Public UnknownAttributes()As XmlAttribute End Class Public Class Test Shared Sub Main() Dim t As Test = New Test() ' Deserialize the file containing unknown attributes. t.DeserializeObject("UnknownAttributes.xml") End Sub Private Sub DeserializeObject(filename As String) Dim ser As XmlSerializer = New XmlSerializer(GetType(Group)) ' A FileStream is needed to read the XML document. Dim fs As FileStream = New FileStream(filename, FileMode.Open) Dim g As Group = CType(ser.Deserialize(fs), Group) fs.Close() ' Write out the data, including unknown attributes. Console.WriteLine(g.GroupName) Console.WriteLine("Number of unknown attributes: " & _ g.UnknownAttributes.Length) Dim xAtt As XmlAttribute for each xAtt in g.UnknownAttributes Console.WriteLine(xAtt.Name & ": " & xAtt.InnerXml) Next ' Serialize the object again with the attributes added. Me.SerializeObject("AttributesAdded.xml",g) End Sub Private Sub SerializeObject(filename As String, g As object) Dim ser As XmlSerializer = New XmlSerializer(GetType(Group)) DIm writer As TextWriter = New StreamWriter(filename) ser.Serialize(writer, g) writer.Close() End Sub End Class
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.






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