StaticSiteMapProvider.GetParentNode Method

Note: This method is new in the .NET Framework version 2.0.

Retrieves the parent site map node of a specific SiteMapNode object.

Namespace: System.Web
Assembly: System.Web (in system.web.dll)

public override SiteMapNode GetParentNode (
	SiteMapNode node
)
public SiteMapNode GetParentNode (
	SiteMapNode node
)
public override function GetParentNode (
	node : SiteMapNode
) : SiteMapNode

Parameters

node

The SiteMapNode for which to retrieve the parent site map node.

Return Value

A SiteMapNode that represents the parent of the specified SiteMapNode; otherwise, a null reference (Nothing in Visual Basic), if no parent site map node exists or the user is not permitted to see the parent site map node.

Exception typeCondition

ArgumentNullException

node is a null reference (Nothing in Visual Basic).

The SiteMapNode objects delegate to the site map provider to keep track of their child and parent site map nodes. As a result, classes that implement a site map provider for a hierarchical site map structure, such as the StaticSiteMapProvider class, and use SiteMapNode objects to represent site map nodes, must track the hierarchical relationships of all site map nodes in order to be able to navigate an entire hierarchical tree.

If a ParentNode property is not found, the StaticSiteMapProvider class detects whether the current site map provider has a ParentProvider property. If so, the site map provider calls the GetParentNode property for the parent site map provider. This enables the scenario where the parent site map node of a site map node is maintained by a different site map provider.

The GetParentNode method calls the BuildSiteMap method internally to retrieve the SiteMapNode that represents the parent of the specified site map node. If security trimming is enabled, the site map node is returned only if the user is permitted to see it.

Windows 98, Windows 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0

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