System.Xml.XmlNodeReader.LookupNamespace C# (CSharp) Méthode

        public override String LookupNamespace(string prefix) {
            if ( !IsInReadingStates() )
                return null;
            string ns = readerNav.LookupNamespace( prefix );
            if (ns != null && ns.Length == 0) {
                return null;
            }
            return ns; 
        }