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SiteMapProvider.CurrentNode Property

Gets the SiteMapNode object that represents the currently requested page.

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

public virtual SiteMapNode CurrentNode { get; }
/** @property */
public SiteMapNode get_CurrentNode ()

public function get CurrentNode () : SiteMapNode

Not applicable.

Property Value

A SiteMapNode that represents the currently requested page; otherwise, a null reference (Nothing in Visual Basic), if the SiteMapNode is not found or cannot be returned for the current user.

The SiteMapResolve event is raised before attempting to retrieve a SiteMapNode object, to enable event subscribers to return an instance of the SiteMapNode class. If there are no event subscribers, the SiteMapProvider class calls the FindSiteMapNode method using the current HTTP context to retrieve a SiteMapNode that represents the currently requested page.

If the currently requested page does not correspond with a SiteMapNode, a null reference (Nothing in Visual Basic) is returned. If security trimming is enabled and the user is not permitted to access the SiteMapNode, a null reference (Nothing in Visual Basic) is returned.

TopicLocation
How to: Programmatically Modify Site-Map Nodes in MemoryBuilding ASP .NET Web Applications
How to: Programmatically Modify Site-Map Nodes in MemoryBuilding ASP .NET Web Applications

The following code example demonstrates how to implement the CurrentNode property in a class that implements the abstract SiteMapProvider class.

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

// Implement the CurrentNode property.
public override SiteMapNode CurrentNode
{
  get
  {
    string currentUrl = FindCurrentUrl();
    // Find the SiteMapNode that represents the current page.
    SiteMapNode currentNode = FindSiteMapNode(currentUrl);
    return currentNode;
  }
}

// Implement the RootNode property.
public override SiteMapNode RootNode
{
  get
  {
    return rootNode;
  }
}

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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