System.Xml.DocumentSchemaValidator.LookupPrefix C# (CSharp) Method

        public string LookupPrefix(string namespaceName)
        {
            string prefix = _nsManager.LookupPrefix(namespaceName);
            if (prefix == null)
            {
                prefix = _startNode.GetPrefixOfNamespaceStrict(namespaceName);
            }
            return prefix;
        }