TreeList showing footers only for first level of hierarchy

[JFB]

I have a TreeList that contains a grid of values and I want to display a single footer at the end of the TreeList for showing the column totals for all columns that have a FooterTemplate.

Note that the TreeList footers on Telerik's website have multiple levels for each hierarchy level. I would like to hide the footers doing something like this, but it's not working: 

protected void rtlRshItems_ItemDatabound(object sender, TreeListItemDataBoundEventArgs e)
    {
        TreeListDataItem item = e.Item as TreeListDataItem;

        if (e.Item is TreeListDataItem)
        {
            var workItemId = (int) item.GetDataKeyValue("WorkItemId");
            parentId = GetParentId(workItemId);

            if (parentId == null)
                item.OwnerTreeList.ShowFooter = true;
            else
                item.OwnerTreeList.ShowFooter = false;
        }
    }

Note that GetParentId() returns null if there is no parent for the current item, meaning that I want to show a footer for that level only. 

[Maria Ilieva]

Hello,

You could try the following approach:

protected void RadTreeList1_ItemCommand(object sender, TreeListCommandEventArgs e)
    {
        if (e.CommandName == "ExpandCollapse")
        {
            TreeListDataItem dataItem = e.Item as TreeListDataItem;
            if (dataItem.ParentItem != null)
            {
                item.OwnerTreeList.ShowFooter = false;
             }
           else
             {
                item.OwnerTreeList.ShowFooter = true;
             }
        }
    }

Greetings,
Maria Ilieva
the Telerik team

[Nicolaï]

Same question as thread starter.
But his code and the suggestion only toggles the showfooter property for the entire treelist...
Any way of only showing only one footer, ignoring all hierarchy items?

http://demos.telerik.com/aspnet-ajax/treelist/examples/columns/aggregates/defaultcs.aspx

Count: 98

Sum: 10,702,470,081.00

Sum: 212,404,936.00 km2

But not the partial ones if you expand items in that demo.

[Nicolaï]

Ok, 1 minute later, here's an answer that works...
            ElseIf TypeOf (e.Item) Is TreeListFooterItem Then
                Dim tlfi As TreeListFooterItem = e.Item
                Dim hI As TreeListHierarchyIndex = tlfi.HierarchyIndex
                Dim a As Integer = hI.LevelIndex
                Dim b As Integer = hI.NestedLevel
                If a = -1 And b = -1 Then
                    tlfi.Visible = True
                Else
                    tlfi.Visible = False
                End If

(ItemDatabound event)