Node.LookupPrefix method

The lookupPrefix() method of the Node interface returns a String containing the prefix for a given namespace URI, if present, and null if not. When multiple prefixes are possible, the first prefix is returned.

public string LookupPrefix(string namespaceURI)
Parameter Type Description
namespaceURI String A string containing the namespace to look the prefix up.

Return Value

A String containing the corresponding prefix, or null if none has been found. If namespace is null, or the the empty string, lookupPrefix() returns null.

If the node is a DocumentType or a DocumentFragment, lookupPrefix() always returns null.

See Also