How can we alter this case

..to add one more nested table with DataKeyNames="EmployeeID, OrderID, newColumnID" ?

Thank you!

static string GetMenuItemsFromSQL()

 {

string xml = string.Empty; 
string queryString = @"SELECT Department.Name AS name, Department.DepartmentID AS id, 
Department.Description AS desription, Category.Name AS name,

Category.CategoryID AS id

FROM Department AS department INNER JOIN

Category AS category ON department.DepartmentID = category.DepartmentID

ORDER BY department.DepartmentID

FOR XML Auto, ROOT('departments')";

string connectionString = WebSiteConfiguration.DbConnectionString; 
 

using (SqlConnection connection = new SqlConnection(connectionString))

{

SqlCommand SelectCommand = new SqlCommand(queryString, connection); 
connection.Open();
XmlReader xr = SelectCommand.ExecuteXmlReader(); 
xr.MoveToContent();
xml = xr.ReadOuterXml();

}

return xml; 
}

//.cs page
protected void Page_Load(object sender, EventArgs e) 
{

XmlDataSource1.Data =

CatalogAccess.GetMenuItemsFromSQL();
}

//.ascx
<telerik:RadPanelBar ID="RadPanelBar1" Runat="server" Skin="Web20" ExpandMode="SingleExpandedItem"
DataSourceID="XmlDataSource1" >
 <CollapseAnimation Type="None" Duration="100"></CollapseAnimation>

 <DataBindings> 
    <telerik:RadPanelItemBinding DataMember="department" Depth="1" TextField="name" />
    <telerik:RadPanelItemBinding DataMember="category" Depth="2" TextField="name" /> 
</DataBindings>

<

ExpandAnimation Type="None" Duration="10"></ExpandAnimation> 
</telerik:RadPanelBar> 

<asp:XmlDataSource ID="XmlDataSource1" runat="server" ></asp:XmlDataSource>
 

What I'd really like to do is to be able to get the id of the tree somehow at runtime so I don't have to have this switch. Is this possible?
Something  along the lines of 
sender.get_items().getItem(0).Controls(0).get_id();.
I know this doesn't exist but is there some way to get the same effect?
THanks ... Ed