XDocument Class

Reference

Definition

Namespace:: System.Xml.Linq

Assembly:: System.Xml.XDocument.dll

Assembly:: System.Xml.Linq.dll

Assembly:: netstandard.dll

Source:: XDocument.cs

Source:: XDocument.cs

Source:: XDocument.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Represents an XML document. For the components and usage of an XDocument object, see XDocument Class Overview.

public ref class XDocument : System::Xml::Linq::XContainer

public class XDocument : System.Xml.Linq.XContainer

type XDocument = class
    inherit XContainer

Public Class XDocument
Inherits XContainer

Inheritance: Object

XObject

XNode

XContainer
XDocument

Examples

The following example creates a document, and then adds a comment and an element to it. It then composes another document using the results of a query.

XDocument srcTree = new XDocument(
    new XComment("This is a comment"),
    new XElement("Root",
        new XElement("Child1", "data1"),
        new XElement("Child2", "data2"),
        new XElement("Child3", "data3"),
        new XElement("Child2", "data4"),
        new XElement("Info5", "info5"),
        new XElement("Info6", "info6"),
        new XElement("Info7", "info7"),
        new XElement("Info8", "info8")
    )
);

XDocument doc = new XDocument(
    new XComment("This is a comment"),
    new XElement("Root",
        from el in srcTree.Element("Root").Elements()
        where ((string)el).StartsWith("data")
        select el
    )
);
Console.WriteLine(doc);

Dim srcTree As XDocument = _
    <?xml version="1.0" encoding="utf-8" standalone="yes"?>
        <!--This is a comment-->
        <Root>
            <Child1>data1</Child1>
            <Child2>data2</Child2>
            <Child3>data3</Child3>
            <Child2>data4</Child2>
            <Info5>info5</Info5>
            <Info6>info6</Info6>
            <Info7>info7</Info7>
            <Info8>info8</Info8>
        </Root>
Dim doc As XDocument = _
    <?xml version="1.0" encoding="utf-8" standalone="yes"?>
        <!--This is a comment-->
        <Root>
            <%= From el In srcTree.<Root>.Elements _
                Where CStr(el).StartsWith("data") _
                Select el %>
        </Root>
Console.WriteLine(doc)

This example produces the following output:

<!--This is a comment-->
<Root>
  <Child1>data1</Child1>
  <Child2>data2</Child2>
  <Child3>data3</Child3>
  <Child2>data4</Child2>
</Root>

Remarks

For details about the valid content of an XDocument, see Valid Content of XElement and XDocument Objects.

Constructors

XDocument()	Initializes a new instance of the XDocument class.
XDocument(Object[])	Initializes a new instance of the XDocument class with the specified content.
XDocument(XDeclaration, Object[])	Initializes a new instance of the XDocument class with the specified XDeclaration and content.
XDocument(XDocument)	Initializes a new instance of the XDocument class from an existing XDocument object.

Properties

BaseUri	Gets the base URI for this XObject. (Inherited from XObject)
Declaration	Gets or sets the XML declaration for this document.
Document	Gets the XDocument for this XObject. (Inherited from XObject)
DocumentType	Gets the Document Type Definition (DTD) for this document.
FirstNode	Gets the first child node of this node. (Inherited from XContainer)
LastNode	Gets the last child node of this node. (Inherited from XContainer)
NextNode	Gets the next sibling node of this node. (Inherited from XNode)
NodeType	Gets the node type for this node.
Parent	Gets the parent XElement of this XObject. (Inherited from XObject)
PreviousNode	Gets the previous sibling node of this node. (Inherited from XNode)
Root	Gets the root element of the XML Tree for this document.

Methods

Add(Object)	Adds the specified content as children of this XContainer. (Inherited from XContainer)
Add(Object[])	Adds the specified content as children of this XContainer. (Inherited from XContainer)
AddAfterSelf(Object)	Adds the specified content immediately after this node. (Inherited from XNode)
AddAfterSelf(Object[])	Adds the specified content immediately after this node. (Inherited from XNode)
AddAnnotation(Object)	Adds an object to the annotation list of this XObject. (Inherited from XObject)
AddBeforeSelf(Object)	Adds the specified content immediately before this node. (Inherited from XNode)
AddBeforeSelf(Object[])	Adds the specified content immediately before this node. (Inherited from XNode)
AddFirst(Object)	Adds the specified content as the first children of this document or element. (Inherited from XContainer)
AddFirst(Object[])	Adds the specified content as the first children of this document or element. (Inherited from XContainer)
Ancestors()	Returns a collection of the ancestor elements of this node. (Inherited from XNode)
Ancestors(XName)	Returns a filtered collection of the ancestor elements of this node. Only elements that have a matching XName are included in the collection. (Inherited from XNode)
Annotation(Type)	Gets the first annotation object of the specified type from this XObject. (Inherited from XObject)
Annotation<T>()	Gets the first annotation object of the specified type from this XObject. (Inherited from XObject)
Annotations(Type)	Gets a collection of annotations of the specified type for this XObject. (Inherited from XObject)
Annotations<T>()	Gets a collection of annotations of the specified type for this XObject. (Inherited from XObject)
CreateReader()	Creates an XmlReader for this node. (Inherited from XNode)
CreateReader(ReaderOptions)	Creates an XmlReader with the options specified by the `readerOptions` parameter. (Inherited from XNode)
CreateWriter()	Creates an XmlWriter that can be used to add nodes to the XContainer. (Inherited from XContainer)
DescendantNodes()	Returns a collection of the descendant nodes for this document or element, in document order. (Inherited from XContainer)
Descendants()	Returns a collection of the descendant elements for this document or element, in document order. (Inherited from XContainer)
Descendants(XName)	Returns a filtered collection of the descendant elements for this document or element, in document order. Only elements that have a matching XName are included in the collection. (Inherited from XContainer)
Element(XName)	Gets the first (in document order) child element with the specified XName. (Inherited from XContainer)
Elements()	Returns a collection of the child elements of this element or document, in document order. (Inherited from XContainer)
Elements(XName)	Returns a filtered collection of the child elements of this element or document, in document order. Only elements that have a matching XName are included in the collection. (Inherited from XContainer)
ElementsAfterSelf()	Returns a collection of the sibling elements after this node, in document order. (Inherited from XNode)
ElementsAfterSelf(XName)	Returns a filtered collection of the sibling elements after this node, in document order. Only elements that have a matching XName are included in the collection. (Inherited from XNode)
ElementsBeforeSelf()	Returns a collection of the sibling elements before this node, in document order. (Inherited from XNode)
ElementsBeforeSelf(XName)	Returns a filtered collection of the sibling elements before this node, in document order. Only elements that have a matching XName are included in the collection. (Inherited from XNode)
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
IsAfter(XNode)	Determines if the current node appears after a specified node in terms of document order. (Inherited from XNode)
IsBefore(XNode)	Determines if the current node appears before a specified node in terms of document order. (Inherited from XNode)
Load(Stream, LoadOptions)	Creates a new XDocument instance by using the specified stream, optionally preserving white space, setting the base URI, and retaining line information.
Load(Stream)	Creates a new XDocument instance by using the specified stream.
Load(String, LoadOptions)	Creates a new XDocument from a file, optionally preserving white space, setting the base URI, and retaining line information.
Load(String)	Creates a new XDocument from a file.
Load(TextReader, LoadOptions)	Creates a new XDocument from a TextReader, optionally preserving white space, setting the base URI, and retaining line information.
Load(TextReader)	Creates a new XDocument from a TextReader.
Load(XmlReader, LoadOptions)	Loads an XDocument from an XmlReader, optionally setting the base URI, and retaining line information.
Load(XmlReader)	Creates a new XDocument from an XmlReader.
LoadAsync(Stream, LoadOptions, CancellationToken)	Asynchronously creates a new XDocument and initializes its underlying XML tree from the specified stream, optionally preserving white space.
LoadAsync(TextReader, LoadOptions, CancellationToken)	Creates a new XDocument and initializes its underlying XML tree using the specified TextReader parameter, optionally preserving white space.
LoadAsync(XmlReader, LoadOptions, CancellationToken)	Creates a new XDocument containing the contents of the specified XmlReader.
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
Nodes()	Returns a collection of the child nodes of this element or document, in document order. (Inherited from XContainer)
NodesAfterSelf()	Returns a collection of the sibling nodes after this node, in document order. (Inherited from XNode)
NodesBeforeSelf()	Returns a collection of the sibling nodes before this node, in document order. (Inherited from XNode)
Parse(String, LoadOptions)	Creates a new XDocument from a string, optionally preserving white space, setting the base URI, and retaining line information.
Parse(String)	Creates a new XDocument from a string.
Remove()	Removes this node from its parent. (Inherited from XNode)
RemoveAnnotations(Type)	Removes the annotations of the specified type from this XObject. (Inherited from XObject)
RemoveAnnotations<T>()	Removes the annotations of the specified type from this XObject. (Inherited from XObject)
RemoveNodes()	Removes the child nodes from this document or element. (Inherited from XContainer)
ReplaceNodes(Object)	Replaces the children nodes of this document or element with the specified content. (Inherited from XContainer)
ReplaceNodes(Object[])	Replaces the children nodes of this document or element with the specified content. (Inherited from XContainer)
ReplaceWith(Object)	Replaces this node with the specified content. (Inherited from XNode)
ReplaceWith(Object[])	Replaces this node with the specified content. (Inherited from XNode)
Save(Stream, SaveOptions)	Outputs this XDocument to the specified Stream, optionally specifying formatting behavior.
Save(Stream)	Outputs this XDocument to the specified Stream.
Save(String, SaveOptions)	Serialize this XDocument to a file, optionally disabling formatting.
Save(String)	Serialize this XDocument to a file, overwriting an existing file, if it exists.
Save(TextWriter, SaveOptions)	Serialize this XDocument to a TextWriter, optionally disabling formatting.
Save(TextWriter)	Serialize this XDocument to a TextWriter.
Save(XmlWriter)	Serialize this XDocument to an XmlWriter.
SaveAsync(Stream, SaveOptions, CancellationToken)	Output this XDocument to a Stream.
SaveAsync(TextWriter, SaveOptions, CancellationToken)	Writes this XDocument to a TextWriter.
SaveAsync(XmlWriter, CancellationToken)	Writes this XDocument to an XmlWriter.
ToString()	Returns the indented XML for this node. (Inherited from XNode)
ToString(SaveOptions)	Returns the XML for this node, optionally disabling formatting. (Inherited from XNode)
WriteTo(XmlWriter)	Write this document to an XmlWriter.
WriteToAsync(XmlWriter, CancellationToken)	Writes this XDocument's underlying XML tree to the specified XmlWriter.
WriteToAsync(XmlWriter, CancellationToken)	Writes the current node to an XmlWriter. (Inherited from XNode)

Events

Changed	Raised when this XObject or any of its descendants have changed. (Inherited from XObject)
Changing	Raised when this XObject or any of its descendants are about to change. (Inherited from XObject)

Explicit Interface Implementations

IXmlLineInfo.HasLineInfo()	Gets a value indicating whether or not this XObject has line information. (Inherited from XObject)
IXmlLineInfo.LineNumber	Gets the line number that the underlying XmlReader reported for this XObject. (Inherited from XObject)
IXmlLineInfo.LinePosition	Gets the line position that the underlying XmlReader reported for this XObject. (Inherited from XObject)

Extension Methods

Validate(XDocument, XmlSchemaSet, ValidationEventHandler, Boolean)	Validates that an XDocument conforms to an XSD in an XmlSchemaSet, optionally populating the XML tree with the post-schema-validation infoset (PSVI).
Validate(XDocument, XmlSchemaSet, ValidationEventHandler)	This method validates that an XDocument conforms to an XSD in an XmlSchemaSet.
CreateNavigator(XNode, XmlNameTable)	Creates an XPathNavigator for an XNode. The XmlNameTable enables more efficient XPath expression processing.
CreateNavigator(XNode)	Creates an XPathNavigator for an XNode.
XPathEvaluate(XNode, String, IXmlNamespaceResolver)	Evaluates an XPath expression, resolving namespace prefixes using the specified IXmlNamespaceResolver.
XPathEvaluate(XNode, String)	Evaluates an XPath expression.
XPathSelectElement(XNode, String, IXmlNamespaceResolver)	Selects an XElement using a XPath expression, resolving namespace prefixes using the specified IXmlNamespaceResolver.
XPathSelectElement(XNode, String)	Selects an XElement using a XPath expression.
XPathSelectElements(XNode, String, IXmlNamespaceResolver)	Selects a collection of elements using an XPath expression, resolving namespace prefixes using the specified IXmlNamespaceResolver.
XPathSelectElements(XNode, String)	Selects a collection of elements using an XPath expression.
ToXPathNavigable(XNode)	Returns an accessor that allows you to navigate and edit the specified XNode.

Applies to

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