Статья
11/18/2011

XContainer.ReplaceNodes Method (Object)

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

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

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

Syntax

'Declaration
Public Sub ReplaceNodes ( _
    content As Object _
)

public void ReplaceNodes(
    Object content
)

Parameters

content
Type: System.Object
A content object containing simple content or a collection of content objects that replace the children nodes.

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 an XML tree that contains children nodes. It then replaces all of the children nodes with a single element.

To see an example of replacing the children nodes with the results of a LINQ query, see ReplaceNodes.

Dim output As New StringBuilder
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)
output.Append(root)
output.Append(Environment.NewLine)


OutputTextBlock.Text = output.ToString()

StringBuilder output = new StringBuilder();
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
);
output.Append(root  + 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.

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