XDocument.ReplaceNodes Method (System.Xml.Linq)

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XDocument.ReplaceNodes Method

Replaces the children nodes of this document or element with the specified content.

This member is overloaded. For complete information about this member, including syntax, usage, and examples, click a name in the overload list.

Overload List

	Name	Description
	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.)

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Remarks

For details about the valid content that can be passed to this function, see Valid Content of XElement and XDocument Objects.

This method will raise the Changed and the Changing events.

This method has snapshot semantics. It first creates a copy of the new content. It then removes all children nodes of this node. Finally, it adds the new content as children nodes. This means that you can replace children nodes using a query on the children nodes themselves.

Examples

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

XElement root = new XElement("Root",
    new XElement("Child", 1),
    new XElement("Child", 2),
    new XElement("Child", 3),
    new XElement("Child", 4),
    new XElement("Child", 5)
);
root.ReplaceNodes(
    from el in root.Elements()
    where (int)el >= 3
    select el
);
Console.WriteLine(root);

Visual Basic

Dim root As XElement = _ 
    <Root>
        <Child>1</Child>
        <Child>2</Child>
        <Child>3</Child>
        <Child>4</Child>
        <Child>5</Child>
    </Root>
root.ReplaceNodes( _
    From el In root.Elements _
    Where el.Value >= 3 _
    Select el)
Console.WriteLine(root)

This example produces the following output:

xmlLang

<Root>
  <Child>3</Child>
  <Child>4</Child>
  <Child>5</Child>
</Root>

Reference

XDocument Class

System.Xml.Linq Namespace

Add

RemoveNodes

Other Resources

LINQ to XML