System.Xml.XmlWellFormedWriter.LookupLocalNamespace C# (CSharp) Method

        private string LookupLocalNamespace(string prefix)
        {
            for (int i = _nsTop; i > _elemScopeStack[_elemTop].prevNSTop; i--)
            {
                if (_nsStack[i].prefix == prefix)
                {
                    return _nsStack[i].namespaceUri;
                }
            }
            return null;
        }