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XContainer.AddBeforeSelf Method

Adds the specified content immediately before this node.

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

  NameDescription
Public method Supported by the .NET Compact Framework Supported by the XNA Framework AddBeforeSelf(Object) Adds the specified content immediately before this node. (Inherited from XNode.)
Public method Supported by the .NET Compact Framework Supported by the XNA Framework AddBeforeSelf(Object[]) Adds the specified content immediately before this node. (Inherited from XNode.)
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For details about the valid content that can be passed to this method, see Valid Content of XElement and XDocument Objects.

This method will raise the Changed and Changing events.

The XContainer stores its child notes as a singly-linked list of XNode objects. This means that the AddBeforeSelf method must traverse the list of direct child nodes under the parent container. Therefore, using this method might affect your performance.

The following example uses a LINQ query to create an IEnumerable<T> of XElement, which it then passes to this method. This adds the results of a query to the tree in the desired location.

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("Child1", 1),
    new XElement("Child2", 2),
    new XElement("Child3", 3),
    new XElement("Child4", 4),
    new XElement("Child5", 5)
);
XElement child1 = xmlTree.Element("Child1");
child1.AddBeforeSelf(
    from el in srcTree.Elements()
    where (int)el > 3
    select el
);
Console.WriteLine(xmlTree);

This example produces the following output:

<Root>
  <Element4>4</Element4>
  <Element5>5</Element5>
  <Child1>1</Child1>
  <Child2>2</Child2>
  <Child3>3</Child3>
  <Child4>4</Child4>
  <Child5>5</Child5>
</Root>

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