XContainer.AddFirst Method (Object)
Adds the specified content as the first children of this document or element.
Assemblies: System.Xml.Linq (in System.Xml.Linq.dll)
System.Xml.XDocument (in System.Xml.XDocument.dll)
The following example creates two XML trees, uses this method to add an XElement object as the first element to one of them. It also adds the results of a LINQ query to the XML tree.
This example produces the following output:
.NET FrameworkSupported in: 4.6, 4.5, 4, 3.5
.NET Framework Client ProfileSupported in: 4, 3.5 SP1
XNA FrameworkSupported in: 3.0
Portable Class LibrarySupported in: Portable Class Library
Supported in: Windows Phone 8.1
Supported in: Windows Phone Silverlight 8.1
Supported in: Windows Phone Silverlight 8