System.Runtime.Serialization.ExtensionDataReader.LookupNamespace C# (CSharp) Method

        public override string LookupNamespace(string prefix)
        {
            if (IsXmlDataNode)
                return _xmlNodeReader.LookupNamespace(prefix);

            string ns;
            if (!s_prefixToNsTable.TryGetValue(prefix, out ns))
                return null;
            return ns;
        }