Artículo
11/18/2011

XContainer Class

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Represents a node that can contain other nodes.

Inheritance Hierarchy

System.Object
  System.Xml.Linq.XObject
    System.Xml.Linq.XNode
      System.Xml.Linq.XContainer
        System.Xml.Linq.XDocument
        System.Xml.Linq.XElement

Namespace: System.Xml.Linq
Assembly: System.Xml.Linq (in System.Xml.Linq.dll)

Syntax

'Declaration
Public MustInherit Class XContainer _
    Inherits XNode

public abstract class XContainer : XNode

The XContainer type exposes the following members.

Properties

	Name	Description
	BaseUri	Gets the base URI for this XObject. (Inherited from XObject.)
	Document	Gets the XDocument for this XObject. (Inherited from XObject.)
	FirstNode	Get the first child node of this node.
	LastNode	Get the last child node of this node.
	NextNode	Gets the next sibling node of this node. (Inherited from XNode.)
	NodeType	Gets the node type for this XObject. (Inherited from XObject.)
	Parent	Gets the parent XElement of this XObject. (Inherited from XObject.)
	PreviousNode	Gets the previous sibling node of this node. (Inherited from XNode.)

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Methods

	Name	Description
	Add(Object)	Adds the specified content as children of this XContainer.
	Add(array<Object[])	Adds the specified content as children of this XContainer.
	AddAfterSelf(Object)	Adds the specified content immediately after this node. (Inherited from XNode.)
	AddAfterSelf(array<Object[])	Adds the specified content immediately after this node. (Inherited from XNode.)
	AddAnnotation	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(array<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.
	AddFirst(array<Object[])	Adds the specified content as the first children of this document or element.
	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>()	Get 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 for this node. (Inherited from XNode.)
	CreateWriter	Creates an XmlWriter that can be used to add nodes to the XContainer.
	DescendantNodes	Returns a collection of the descendant nodes for this document or element, in document order.
	Descendants()	Returns a collection of the descendant elements for this document or element, in document order.
	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.
	Element	Gets the first (in document order) child element with the specified XName.
	Elements()	Returns a collection of the child elements of this element or document, in document order.
	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.
	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.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object 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.)
	IsAfter	Determines if the current node appears after a specified node in terms of document order. (Inherited from XNode.)
	IsBefore	Determines if the current node appears before a specified node in terms of document order. (Inherited from XNode.)
	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.
	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.)
	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.
	ReplaceNodes(Object)	Replaces the children nodes of this document or element with the specified content.
	ReplaceNodes(array<Object[])	Replaces the children nodes of this document or element with the specified content.
	ReplaceWith(Object)	Replaces this node with the specified content. (Inherited from XNode.)
	ReplaceWith(array<Object[])	Replaces this node with the specified content. (Inherited from XNode.)
	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	Writes this node to an XmlWriter. (Inherited from XNode.)

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Events

	Name	Description
	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.)

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Extension Methods

	Name	Description
	CreateNavigator()	Overloaded. Creates an XPathNavigator for an XNode. (Defined by Extensions.)
	CreateNavigator(XmlNameTable)	Overloaded. Creates an XPathNavigator for an XNode. The XmlNameTable enables more efficient XPath expression processing. (Defined by Extensions.)
	XPathEvaluate(String)	Overloaded. Evaluates an XPath expression. (Defined by Extensions.)
	XPathEvaluate(String, IXmlNamespaceResolver)	Overloaded. Evaluates an XPath expression, resolving namespace prefixes using the specified IXmlNamespaceResolver. (Defined by Extensions.)
	XPathSelectElement(String)	Overloaded. Selects an XElement using a XPath expression. (Defined by Extensions.)
	XPathSelectElement(String, IXmlNamespaceResolver)	Overloaded. Selects an XElement using a XPath expression, resolving namespace prefixes using the specified IXmlNamespaceResolver. (Defined by Extensions.)
	XPathSelectElements(String)	Overloaded. Selects a collection of elements using an XPath expression. (Defined by Extensions.)
	XPathSelectElements(String, IXmlNamespaceResolver)	Overloaded. Selects a collection of elements using an XPath expression, resolving namespace prefixes using the specified IXmlNamespaceResolver. (Defined by Extensions.)

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Explicit Interface Implementations

	Name	Description
	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.)

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Remarks

This class provides functionality such as finding the next or previous sibling node, or enumerating the direct children of a node.

The two classes that derive from XContainer are XDocument and XElement.

Examples

The following example creates two XML trees, and then uses this method to add the results of a query to one of them.

Dim output As New StringBuilder
Dim srcTree As XElement = _
        <Root>
            <Element1>1</Element1>
            <Element2>2</Element2>
            <Element3>3</Element3>
            <Element4>4</Element4>
            <Element5>5</Element5>
        </Root>
Dim xmlTree As XElement = _
        <Root>
            <NewElement>Content</NewElement>
        </Root>
xmlTree.Add( _
    From el In srcTree.Elements _
    Where CInt(el) >= 3 _
    Select el)
output.Append(xmlTree)
output.Append(Environment.NewLine)


OutputTextBlock.Text = output.ToString()

StringBuilder output = new StringBuilder();
XElement srcTree = new XElement("Root",
    new XElement("Element1", 1),
    new XElement("Element2", 2),
    new XElement("Element3", 3),
    new XElement("Element4", 4),
    new XElement("Element5", 5)
);
XElement xmlTree = new XElement("Root",
    new XElement("NewElement", "Content")
);
xmlTree.Add(
    from el in srcTree.Elements()
    where (int)el >= 3
    select el
);
output.Append(xmlTree + Environment.NewLine);

OutputTextBlock.Text = output.ToString();

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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