XStreamingElement.Add Method (Object[])

Adds the specified content as children to this XStreamingElement.

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

public void Add(
	params Object[] content


Type: System.Object[]
Content to be added to the streaming element.

This constructor adds the specified content and attributes to the XStreamingElement. While it is often possible to construct the XStreamingElement in a single statement, it is sometimes more convenient to add content to the streaming element incrementally.

Queries are not iterated until the XStreamingElement is serialized. This is in contrast to using queries for content for an XElement, where queries are iterated at the time of construction of the new XElement.

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

The following example creates a new XStreamingElement. It then adds two queries to the streaming element. The queries are not iterated until the streaming element is serialized.

StringBuilder output = new StringBuilder();
XElement srcTree = new XElement("Root",
                       new XElement("Child", 1),
                       new XElement("Child", 2),
                       new XElement("Child", 3),
                       new XElement("Child", 4),
                       new XElement("Child", 5)

XStreamingElement dstTree = new XStreamingElement("NewRoot");

    from el in srcTree.Elements()
    where (int)el <= 1
    select new XElement("Child", (int)el)

    from el in srcTree.Elements()
    where (int)el >= 3
    select new XElement("DifferentChild", (int)el)

output.Append(dstTree + Environment.NewLine);

OutputTextBlock.Text = output.ToString();


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

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

Community Additions