Custom Nodes in File Explorer

I am currently attempting to add custom nodes to the file explorer view, with the selection of the lowest level of each node displaying the contents of multiple listed directories (create nodes with custom names as their own 'custom trees' where the contents of the corresponding listview would include those of directory1 + 2 + 3 etc.) Here is what I have so far, and I am looking for the equivalent value of the 'viewpath' from the main fileexplorer object for each individual node. 

protected void BindDataTable()
    {
        RadTreeNode temp_node;
        DataTable node_template = CreateDirectoryTable();

        foreach (DataRow row in node_template.Rows)
        {
            temp_node = new RadTreeNode();
            temp_node.Text = (string)row[1];
            temp_node.Value = (string)row[2];

            FileExplorerBase.TreeView.Nodes.Add(temp_node);
        }
    }​

 Is it a simple property in the node object? Because I cannot seem to find it. Or is this functionality present in the treeview object directly?