RadTreeView for ASP.NET AJAX
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RadControls for ASP.NET AJAX

To get the full path of a given node, walk the node hierarchy in reverse order using the client-side node object get_parent() method. Notice the statement within the while loop that checks if the currentObject.get_parent() is not null; this statement is only true when currentObject is a node. As the loop climbs back up the tree, eventually currentObject is the RadTreeView client side object and calling get_parent() will return null.

CopyJavaScript
        var s = node.get_text();
        var currentObject = node.get_parent();
        while (currentObject != null) {
            // get_parent() will return null when we reach the treeview
            if (currentObject.get_parent() != null) {
                s = currentObject.get_text() + " > " + s;
            }
            currentObject = currentObject.get_parent();
        }

The following example demonstrates retrieving the full node path. The main logic resides in the OnClientMouseOver event. The arguments passed into the event provide a reference to the currently selected node. The node is traversed in reverse order and a string containing the text path is built up. Finally the text is assigned to the innerHTML of a div for display above the RadTreeView.

 

CopyASPX
<script language="javascript" type="text/javascript">
    function onMouseOver(sender, args) {
        var node = args.get_node();
        var s = node.get_text();
        var currentObject = node.get_parent();
        while (currentObject != null) {
            // get_parent() will return null when we reach the treeview
            if (currentObject.get_parent() != null) {
                s = currentObject.get_text() + " > " + s;
            }
            currentObject = currentObject.get_parent();
        }
        var tbPath;
        tbPath = $get("pathText");
        tbPath.innerHTML = s;
    }
    function onMouseOut(sender, args) {
        $get("pathText").innerHTML = "";
    }
</script>

<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server" />
<div>
    <div id="pathText" class="RadTreeView_Hay" style="height: 20px">
    </div>
    <telerik:RadTreeView ID="RadTreeView2" runat="server" OnClientMouseOver="onMouseOver"
        OnClientMouseOut="onMouseOut" Skin="Hay">
        <Nodes>
            <telerik:RadTreeNode runat="server" Text="Products" ExpandMode="ClientSide">
                <Nodes>
                    <telerik:RadTreeNode runat="server" Text="Books" ExpandMode="ClientSide">
                        <Nodes>
                            <telerik:RadTreeNode runat="server" Text="Fiction">
                            </telerik:RadTreeNode>
                            <telerik:RadTreeNode runat="server" Text="Non-Fiction">
                            </telerik:RadTreeNode>
                            <telerik:RadTreeNode runat="server" Text="Biography">
                            </telerik:RadTreeNode>
                            <telerik:RadTreeNode runat="server" Text="Humor">
                            </telerik:RadTreeNode>
                        </Nodes>
                    </telerik:RadTreeNode>
                </Nodes>
            </telerik:RadTreeNode>
        </Nodes>
    </telerik:RadTreeView>
</div>
</form>

See Also

Other Resources

RadTreeNode