System.Xml Namespace

The System.Xml namespace provides standards-based support for processing XML.

The supported standards include:

• XML 1.0 - http://www.w3.org/TR/1998/REC-xml-19980210 - including DTD support.

• XML Namespaces - http://www.w3.org/TR/REC-xml-names/ - both stream level and DOM.

• XSD Schemas - http://www.w3.org/2001/XMLSchema

• XPath expressions - http://www.w3.org/TR/xpath

• XSLT transformations - http://www.w3.org/TR/xslt

• DOM Level 1 Core - http://www.w3.org/TR/REC-DOM-Level-1/

• DOM Level 2 Core - http://www.w3.org/TR/DOM-Level-2/

Classes

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	Class	Description
	NameTable	Implements a single-threaded XmlNameTable.
	XmlAttribute	Represents an attribute. Valid and default values for the attribute are defined in a document type definition (DTD) or schema.
	XmlAttributeCollection	Represents a collection of attributes that can be accessed by name or index.
	XmlCDataSection	Represents a CDATA section.
	XmlCharacterData	Provides text manipulation methods that are used by several classes.
	XmlComment	Represents the content of an XML comment.
	XmlConvert	Encodes and decodes XML names and provides methods for converting between common language runtime types and XML Schema definition language (XSD) types. When converting data types the values returned are locale independent.
	XmlDataDocument	Allows structured data to be stored, retrieved, and manipulated through a relational DataSet.
	XmlDeclaration	Represents the XML declaration node <?xml version='1.0'...?>.
	XmlDocument	Represents an XML document.
	XmlDocumentFragment	Represents a lightweight object that is useful for tree insert operations.
	XmlDocumentType	Represents the document type declaration.
	XmlElement	Represents an element.
	XmlEntity	Represents an entity declaration, such as <!ENTITY... >.
	XmlEntityReference	Represents an entity reference node.
	XmlException	Returns detailed information about the last exception.
	XmlImplementation	Defines the context for a set of XmlDocument objects.
	XmlLinkedNode	Gets the node immediately preceding or following this node.
	XmlNamedNodeMap	Represents a collection of nodes that can be accessed by name or index.
	XmlNamespaceManager	Resolves, adds, and removes namespaces to a collection and provides scope management for these namespaces.
	XmlNameTable	Table of atomized string objects.
	XmlNode	Represents a single node in the XML document.
	XmlNodeChangedEventArgs	Provides data for the NodeChanged, NodeChanging, NodeInserted, NodeInserting, NodeRemoved and NodeRemoving events.
	XmlNodeList	Represents an ordered collection of nodes.
	XmlNodeReader	Represents a reader that provides fast, non-cached forward only access to XML data in an XmlNode.
	XmlNotation	Represents a notation declaration, such as <!NOTATION... >.
	XmlParserContext	Provides all the context information required by the XmlReader to parse an XML fragment.
	XmlProcessingInstruction	Represents a processing instruction, which XML defines to keep processor-specific information in the text of the document.
	XmlQualifiedName	Represents an XML qualified name.
	XmlReader	Represents a reader that provides fast, non-cached, forward-only access to XML data.
	XmlReaderSettings	Specifies a set of features to support on the XmlReader object created by the Create method.
	XmlResolver	Resolves external XML resources named by a Uniform Resource Identifier (URI).
	XmlSecureResolver	Helps to secure another implementation of XmlResolver by wrapping the XmlResolver object and restricting the resources that the underlying XmlResolver has access to.
	XmlSignificantWhitespace	Represents white space between markup in a mixed content node or white space within an xml:space= 'preserve' scope. This is also referred to as significant white space.
	XmlText	Represents the text content of an element or attribute.
	XmlTextReader	Represents a reader that provides fast, non-cached, forward-only access to XML data.
	XmlTextWriter	Represents a writer that provides a fast, non-cached, forward-only way of generating streams or files containing XML data that conforms to the W3C Extensible Markup Language (XML) 1.0 and the Namespaces in XML recommendations.
	XmlUrlResolver	Resolves external XML resources named by a Uniform Resource Identifier (URI).
	XmlValidatingReader	Represents a reader that provides document type definition (DTD), XML-Data Reduced (XDR) schema, and XML Schema definition language (XSD) validation.
	XmlWhitespace	Represents white space in element content.
	XmlWriter	Represents a writer that provides a fast, non-cached, forward-only means of generating streams or files containing XML data.
	XmlWriterSettings	Specifies a set of features to support on the XmlWriter object created by the System.Xml.XmlWriter.Create method.

Interfaces

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	Interface	Description
	IHasXmlNode	Enables a class to return an XmlNode from the current context or position.
	IXmlLineInfo	Provides an interface to enable a class to return line and position information.
	IXmlNamespaceResolver	Provides read-only access to a set of prefix and namespace mappings.

Delegates

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	Delegate	Description
	XmlNodeChangedEventHandler	Represents the method that handles NodeChanged, NodeChanging, NodeInserted, NodeInserting, NodeRemoved and NodeRemoving events.

Enumerations

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	Enumeration	Description
	ConformanceLevel	Specifies the amount of input or output checking that the created XmlReader and XmlWriter objects perform.
	EntityHandling	Specifies how the XmlTextReader or XmlValidatingReader handle entities.
	Formatting	Specifies formatting options for the XmlTextWriter.
	NewLineHandling	Specifies how to handle line breaks.
	ReadState	Specifies the state of the reader.
	ValidationType	Specifies the type of validation to perform.
	WhitespaceHandling	Specifies how white space is handled.
	WriteState	Specifies the state of the XmlWriter.
	XmlDateTimeSerializationMode	Specifies how to treat the time value when converting between string and DateTime.
	XmlNamespaceScope	Defines the namespace scope.
	XmlNodeChangedAction	Specifies the type of node change.
	XmlNodeOrder	Describes the document order of a node compared to a second node.
	XmlNodeType	Specifies the type of node.
	XmlOutputMethod	Specifies the method used to serialize the XmlWriter output.
	XmlSpace	Specifies the current xml:space scope.
	XmlTokenizedType	Represents the XML type for the string. This allows the string to be read as a particular XML type, for example a CDATA section type.