- uri
- the namespace URI
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Return one of the prefixes mapped to a Namespace URI.
If more than one prefix is currently mapped to the same URI, this method will make an arbitrary selection; if you want all of the prefixes, use the NamespaceSupport.Prefixes method instead.
Note: this will never return the empty (default) prefix; to check for a default prefix, use the NamespaceSupport.GetURI(string) method with an argument of "".