XContainer::AddFirst Method (array<Object^>^)
Adds the specified content as the first children of this document or element.
Assembly: System.Xml.Linq (in System.Xml.Linq.dll)
Parameters
- content
-
Type:
array<System::Object^>^
A parameter list of content objects.
| Exception | Condition |
|---|---|
| InvalidOperationException | The parent is null. |
This method adds the new content before the existing content of the XContainer.
For details about the valid content that can be passed to this function, see Valid Content of XElement and XDocument Objects1.
The following example creates two XML trees, and 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:
<Root>
<Element4>4</Element4>
<Element5>5</Element5>
<NewChild>new content</NewChild>
<Child1>1</Child1>
<Child2>2</Child2>
<Child3>3</Child3>
<Child4>4</Child4>
<Child5>5</Child5>
</Root>
Available since 8
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1