System.Xml.XmlTextReaderImpl.GetAttribute C# (CSharp) Method

        public override string GetAttribute(int i)
        {
            if (i < 0 || i >= _attrCount)
            {
                throw new ArgumentOutOfRangeException(nameof(i));
            }
            return _nodes[_index + i + 1].StringValue;
        }

 public override string?GetAttribute(string name)
 {
     return(_impl.GetAttribute(name));
 }