Extensions.Ancestors<'T> Method (IEnumerable<'T>, XName)
Returns a filtered collection of elements that contains the ancestors of every node in the source collection. Only elements that have a matching XName are included in the collection.
Assembly: System.Xml.Linq (in System.Xml.Linq.dll)
static member Ancestors<'T when 'T : XNode> : source:IEnumerable<'T> * name:XName -> IEnumerable<XElement>
Parameters
- source
-
Type:
System.Collections.Generic.IEnumerable<'T>
An IEnumerable<'T> of XNode that contains the source collection.
- name
-
Type:
System.Xml.Linq.XName
The XName to match.
Return Value
Type: System.Collections.Generic.IEnumerable<XElement>An IEnumerable<'T> of XElement that contains the ancestors of every node in the source collection. Only elements that have a matching XName are included in the collection.
Type Parameters
- T
The type of the objects in source, constrained to XNode.
If multiple nodes in the source collection have the same ancestor with a matching XName, the ancestor will be included multiple times in the result collection.
This method uses deferred execution.
The following example retrieves a collection of the great grandchildren elements. It then uses this axis method to retrieve all ancestors of all elements in the collection that match a specified XName.
This example produces the following output:
Great Grand Children Elements ---- GreatGrandChild1 GreatGrandChild2 Ancestors ---- Child1
The following is the same example, but in this case the XML is in a namespace. For more information, see Working with XML Namespaces.
This example produces the following output:
Great Grand Children Elements
----
{http://www.adventure-works.com}GreatGrandChild1
{http://www.adventure-works.com}GreatGrandChild2
Ancestors
----
{http://www.adventure-works.com}Child1
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