Thank you for writing. I am afraid I could not understand what you wrote. This part in particular:
" want to do it with using dataset . and binding . but binding 1 node's child
in basic we can read database records by records and add one records to treevies in one step manually . but it works very slow !".
If you want to bind to a DataSet
you should bind your whole tree view, not just a node. A RadTreeNode is not designed to be bound to a DataSet or a DataTable. Please write back if this is not an answer to your question. I am looking forward to helping you further with that.
the Telerik team
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