Xpath and treeview to load part of xml file?

[wernh]

Hi,
I have the following xml sample file:
<?xml version="1.0" encoding="utf-8"?>
<catalogue id="catalogue">
<alldocs id="alldocs">
<documents id="New Heading1" desc="" link="#" uid="1">
<document id="New Document6" desc="" link="#" keywords="" uid="6" />
<documents id="New Heading9" desc="" link="#" uid="9">
<document id="New Document12" desc="" link="#" keywords="" uid="12" />
<document id="New Document14" desc="" link="#" keywords="" uid="14" />
</documents>
<documents id="New Heading10" desc="" link="#" uid="10" />
<document id="New Document11" desc="" link="#" keywords="" uid="11" />
</documents>
</alldocs>
</catalogue>
I want to bind part of this xml file to a treeview control, lets say only the <documents> node with uid=”9” and its subnodes. I have tried the following, but nothing is returned
I have a xmldatasource control, and a treeview control on my aspx page, and in the code behind file the following:
xmlds.DataFile = “~/myxml.xml”
xmlds.XPath = "*[@uid='9']"
xmlds.DataBind()

trvList.DataSource = xmlds
trvList.DataBind()
trvList.AutoGenerateDataBindings = True

Any help will be appreciated.