Rank 1
We are using RadTreeView as a replacement for the menu in SharePoint. It is connecting to a datasource we have generated from the SPSites, basically creating a new SiteMapProvider. This is all in code behind. We have set the ExpandMode to "ServerSideCallBack" for efficiency reasons. But when I navigate to child sites, it doesn't show the currently selected node when the page is loaded......how can we achieve this???
please help
Snippets:
SharePoint MasterPage:
<%@ Master language="C#" Inherits="Chisholm.SharePoint.MasterPages.StudentPortal, Chisholm.SharePoint.MasterPages, Version=1.0.0.0, Culture=neutral, PublicKeyToken=36b5e3431f62f80f" %>
...........................................
<telerik:RadTreeView ID="myLearningTreeView" runat="server" Skin="Office2007"
DataSourceID="MyLearningDS"
OnNodeExpand="NodeExpandHandler"
MaxDataBindDepth="1"
DataNavigateUrlField="Url"
DataTextField="Title" DataValueField="Key" DataFieldID="Key" EnableEmbeddedSkins="False" SingleExpandPath="True">
<DataBindings>
<telerik:RadTreeNodeBinding ExpandMode="ServerSideCallBack" Depth="0" />
</DataBindings>
</telerik:RadTreeView>
<asp:SiteMapDataSource ID="MyLearningDS" runat="server"
ShowStartingNode="false"
StartFromCurrentNode="false"
StartingNodeOffset="0"
SiteMapProvider="MyPortalSiteMapProvider"
StartingNodeUrl="/myLearning"/>
............................
code behind: StudentPortal.cs
namespace
Chisholm.SharePoint.MasterPages
{
public class StudentPortal : MasterPage
{
protected global::Telerik.Web.UI.RadTreeView myLearningTreeView;
public RadTreeNode LastSelectedNode
{
get { return (RadTreeNode)ViewState["LastSelectedNode"]; }
set { ViewState["LastSelectedNode"] = value; }
}
public RadTreeView SiteMenu
{
get { return (RadTreeView)ViewState["SiteMenu"]; }
set { ViewState["SiteMenu"] = value; }
}
protected void Page_Load(object sender, EventArgs e)
{
//if (!Page.IsPostBack)
//{
if ((SiteMenu!=null)&&(LastSelectedNode!=null))
{
// get the custom sql site map provider
SqlSiteMapProvider provider = ((SqlSiteMapProvider)SiteMap.Providers[
"MyPortalSiteMapProvider"]);
if (provider == null)
return;
// add a method to get chid nodes by Key
SiteMapNode siteNode = provider.FindSiteMapNodeFromKey(LastSelectedNode.Value);
if (siteNode == null)
return;
SiteMapNodeCollection childNodes = provider.GetChildNodes(siteNode);
if (childNodes.Count < 1)
return;
// NW: call FindSiteMapNodeFromKey() of the SiteMapProvider using
// the key obtained from the node that was clicked.
// The node that was clicked becomes the new parent of the children
// to be added to it from the database.
//
foreach (SiteMapNode child in childNodes)
{
// NW: The children are created based on the information obtained from
// the database.
//
// create a new node
RadTreeNode rtn =
new RadTreeNode()
{
Value = child.Key,
Text = child.Title,
ExpandMode = TreeNodeExpandMode.ServerSide,
//NW: This is overiden below.
NavigateUrl = child.Url,
LongDesc = child.Description
};
// with the same expand mode as the node currently expanding
rtn.ExpandMode = LastSelectedNode.ExpandMode;
// add the new node to the node that is expanding
LastSelectedNode.Nodes.Add(rtn);
}
// now that the nodes are added, change the current node's expand mode to client-side
LastSelectedNode.ExpandMode = TreeNodeExpandMode.ClientSide;
// signal that the node is now expanded
LastSelectedNode.Expanded =
true;
}
//}
}
protected void NodeExpandHandler(object sender, Telerik.Web.UI.RadTreeNodeEventArgs e)
{
SiteMenu = (RadTreeView)sender;
LastSelectedNode = e.Node;
// get the custom sql site map provider
SqlSiteMapProvider provider = ((SqlSiteMapProvider)SiteMap.Providers[
"MyPortalSiteMapProvider"]);
if (provider == null)
return;
// add a method to get chid nodes by Key
SiteMapNode siteNode = provider.FindSiteMapNodeFromKey(e.Node.Value);
if (siteNode == null)
return;
SiteMapNodeCollection childNodes = provider.GetChildNodes(siteNode);
if (childNodes.Count < 1)
return;
// NW: call FindSiteMapNodeFromKey() of the SiteMapProvider using
// the key obtained from the node that was clicked.
// The node that was clicked becomes the new parent of the children
// to be added to it from the database.
//
foreach (SiteMapNode child in childNodes)
{
// NW: The children are created based on the information obtained from
// the database.
//
// create a new node
RadTreeNode rtn =
new RadTreeNode()
{
Value = child.Key, Text = child.Title,
ExpandMode = TreeNodeExpandMode.ServerSide,
//NW: This is overiden below.
NavigateUrl = child.Url, LongDesc = child.Description
};
// with the same expand mode as the node currently expanding
rtn.ExpandMode = e.Node.ExpandMode;
// add the new node to the node that is expanding
e.Node.Nodes.Add(rtn);
}
// now that the nodes are added, change the current node's expand mode to client-side
e.Node.ExpandMode = TreeNodeExpandMode.ClientSide;
// signal that the node is now expanded
e.Node.Expanded =
true;
}
NOTE:
// we are not using the following code
protected void NodeClickHandler(object sender, Telerik.Web.UI.RadTreeNodeEventArgs e)
{
SiteMenu = (RadTreeView)sender;
LastSelectedNode = e.Node;
}
}
}
once again please help......we have a critical situation here that we are so close to fixing, and this is holding us back.
ps...tried attaching a zip!
regards
Shaun Pitt
Chisholm Institute - Australia
1 Answer, 1 is accepted
You can select the node which contains the url of the current content page by the following line:
(Page.Master.FindControl("<the ID of the tree>") as RadTreeView).FindNodeByUrl(Request.Url.PathAndQuery).Selected = true;Basically, from the content page you are accessing the treeView in the masterPage and knowing the current url, you are searching for a node with the same url and finally setting its Selected property to true!
You should add this to all content pages (at least these that can be navigated from the treeView) and the node which is source of the navigation will always be selected.
Also be careful for pages that are not represented in the treeView - they shouldn't have this applied.
Hope this is going to help you!
Regards,
Nikolay Tsenkov
the Telerik team