Export (0) Print
Expand All

SiteMapProvider.GetChildNodes Method

When overridden in a derived class, retrieves the child nodes of a specific SiteMapNode.

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

abstract GetChildNodes : 
        node:SiteMapNode -> SiteMapNodeCollection

Parameters

node
Type: System.Web.SiteMapNode

The SiteMapNode for which to retrieve all child nodes.

Return Value

Type: System.Web.SiteMapNodeCollection
A read-only SiteMapNodeCollection that contains the immediate child nodes of the specified SiteMapNode; otherwise, a null reference (Nothing in Visual Basic) or an empty collection, if no child nodes exist.

Classes that derive from the SiteMapProvider class must implement the abstract GetChildNodes method.

Notes to Inheritors

When overriding the GetChildNodes method in a derived class, be sure to perform security trimming on the child nodes and ensure that the returned collection is read-only. The collection contains only the immediate children of the specified node.

The following code example demonstrates how to implement the GetChildNodes method in a class that implements the abstract SiteMapProvider class. The SimpleTextSiteMapProvider stores the hierarchical parent/child relationships in one Hashtable object and all SiteMapNode objects in another. The GetChildNodes method performs a reverse-lookup using both ArrayList objects.

This code example is part of a larger example provided for the SiteMapProvider class.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

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.

Show:
© 2014 Microsoft