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XmlSiteMapProvider.Initialize Method

Initializes the XmlSiteMapProvider object. The Initialize method does not actually build a site map, it only prepares the state of the XmlSiteMapProvider to do so.

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

public override void Initialize(
	string name,
	NameValueCollection attributes


Type: System.String
The XmlSiteMapProvider to initialize.
Type: System.Collections.Specialized.NameValueCollection
A NameValueCollection that can contain additional attributes to help initialize name. These attributes are read from the XmlSiteMapProvider configuration in the Web.config file.


The XmlSiteMapProvider is initialized more than once.


A SiteMapNode used a physical path to reference a site map file.

- or -

An error occurred while attempting to parse the virtual path supplied for the siteMapFile attribute.

The XmlSiteMapProvider class overrides the inherited Initialize method to apply several attributes, such as the siteMapFile and description attributes, to the attributes collection.

The following code example demonstrates how to create a new instance of the XmlSiteMapProvider class and initialize it to build a site map from XML data.

<%@ Page Language="c#" %>
<SCRIPT runat="server">
 private void Page_Load(object sender, System.EventArgs e) {
     // Create an instance of the XmlSiteMapProvider class.
     XmlSiteMapProvider testXmlProvider = new XmlSiteMapProvider();
     NameValueCollection providerAttributes = new NameValueCollection(1);
     // Initialize the provider with a provider name and file name.
     testXmlProvider.Initialize("testProvider", providerAttributes);

     // Call the BuildSiteMap to load the site map information into memory.

     // Prints "/myvirtualdirectory/WebForm1.aspx"
     Response.Write(testXmlProvider.RootNode.Url + "<BR>");

     // Prints "/myvirtualdirectory/WebForm2.aspx"
     Response.Write(testXmlProvider.CurrentNode.Url + "<BR>");

The preceding code example uses an XML file that is located in the virtual root of the ASP.NET application. The file has the following format:

  <siteMapNode title="RootNode" description="The root page." url="WebForm1.aspx">
    <siteMapNode title="CurrentNode" description="Some sub page." url="WebForm2.aspx"/>

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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