Only export, not export/import? This is really simple but requires one more input: XML schema and mapping between the
TreeView data and this schema.
Everything is easy: traverse in a loop the root nodes using
System.Web.UI.WebControls.TreeView.Node, for each node call some recursive function which writes the node properties in the XML (or DOM) and call the same function for child nodes.
See this code for example:
http://social.msdn.microsoft.com/Forums/en-US/csharpgeneral/thread/8e6db1e6-e429-4b4f-9ac6-5e848604188b/[
^].
For XML you can use
System.Xml.XmlTextWriter,
System.Xml.XmlDocument (it implements DOM, is the simplest to use but only good for relatively small amount of data) or
System.Xml.Linq.XDocument.
—SA
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