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

        public override string GetAttribute(int i)
        {
            if (IsXmlDataNode)
            {
                return _xmlNodeReader.GetAttribute(i);
            }
            Fx.Assert("ExtensionDataReader GetAttribute method should only be called for IXmlSerializable");
            return null;
        }