asp.net Treeview data binding update

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Hi,

I am working on an asp.net web application that uses treeview control to
display hierarchical data from an xml data source. When I changed the xml
data source the treeview doesn’t update itself. The treeview data source is
asp XMLDataSource that is transformed by an xlst file. The xml data is
generated from SQL database and dynamically bind to the XmlDataSource. Is it
possible to use this method to bind data to treeview control?
Thanks.

Jeff