System.Web.SiteMap.SiteMapResolve

C#

<%@ Page Language="C#" AutoEventWireup="True" %>
<script runat="server">


private void Page_Load(object sender, EventArgs e)
{
// The ExpandForumPaths method is called to handle
// the SiteMapResolve event.
SiteMap.SiteMapResolve +=
new SiteMapResolveEventHandler(this.ExpandForumPaths);
}

private SiteMapNode ExpandForumPaths(Object sender, SiteMapResolveEventArgs e)
{
// The current node represents a Post page in a bulletin board forum.
// Clone the current node and all of its relevant parents. This
// returns a site map node that a developer can then
// walk, modifying each node.Url property in turn.
// Since the cloned nodes are separate from the underlying
// site navigation structure, the fixups that are made do not
// effect the overall site navigation structure.
SiteMapNode currentNode = SiteMap.CurrentNode.Clone(true);
SiteMapNode tempNode = currentNode;

// Obtain the recent IDs.
int forumGroupID = GetMostRecentForumGroupID();
int forumID = GetMostRecentForumID(forumGroupID);
int postID = GetMostRecentPostID(forumID);

// The current node, and its parents, can be modified to include
// dynamic querystring information relevant to the currently
// executing request.
if (0 != postID)
{
tempNode.Url = tempNode.Url + "?PostID=" + postID.ToString();
}

if ((null != (tempNode = tempNode.ParentNode)) &&
(0 != forumID))
{
tempNode.Url = tempNode.Url + "?ForumID=" + forumID.ToString();
}

if ((null != (tempNode = tempNode.ParentNode)) &&
(0 != forumGroupID))
{
tempNode.Url = tempNode.Url + "?ForumGroupID=" + forumGroupID.ToString();
}

return currentNode;
}



// These methods are just placeholders for the example.
// One option is to use the HttpContext or e.Content object
// to obtain the ID.
private int GetMostRecentForumGroupID()
{
return 24;
}

private int GetMostRecentForumID(int forumGroupId)
{
return 128;
}

private int GetMostRecentPostID(int forumId)
{
return 317424;
}


</script>

<html >
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">



<asp:SiteMapPath
id="SiteMapPath1"
runat="server"
RenderCurrentNodeAsLink="true" />



</form>
</body>
</html>