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XPathNavigator.IsDescendant Method

Determines whether the specified XPathNavigator is a descendant of the current XPathNavigator.

Namespace:  System.Xml.XPath
Assembly:  System.Xml (in System.Xml.dll)
public virtual bool IsDescendant(
	XPathNavigator nav


Type: System.Xml.XPath.XPathNavigator

The XPathNavigator to compare to this XPathNavigator.

Return Value

Type: System.Boolean
true if the specified XPathNavigator is a descendant of the current XPathNavigator; otherwise, false.

An XPathNavigator is a descendant of the current XPathNavigator if it is positioned on a descendant node of the current XPathNavigator. Take, for example, the following XML string:


If the current XPathNavigator is positioned on the item node, and the XPathNavigator specified is positioned on the name node, IsDescendant returns true.

This method always returns false under the following conditions:

  • The XPathNavigator specified shares the same implementation but points at a different document instance than the current navigator.

  • The XPathNavigator specified has a different implementation than the current navigator.

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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