Streaming XML parser

StreamingXmlParser.cs

using System;
using System.Linq;
using System.Collections.Generic;
using System.IO;
using System.Xml;
using System.Diagnostics;

class StreamingXmlParser
{
    public class ElementInfo
    {
        public string Name { get; set; }
        public List<string> ParentNames { get; set; }
        public Dictionary<string, string> Attributes { get; set; }
        public string Text { get; set; }
    }

    public static IEnumerable<ElementInfo> StreamElements(Stream file)
    {
        using (var rdr = XmlReader.Create(file))
        {
            string prevName = null;
            int prevDepth = 0;
            var parentNames = new Stack<string>();
            ElementInfo elementInfo = null;
            while (rdr.Read())
            {
                if (rdr.NodeType == XmlNodeType.Element)
                {
                    if (rdr.Depth > prevDepth)
                        parentNames.Push(prevName);
                    else if (rdr.Depth < prevDepth && parentNames.Any())
                        parentNames.Pop();

                    var elementName = rdr.Name;
                    var elementDepth = rdr.Depth;
                    string elementValue = null;

                    var attributes = new Dictionary<string, string>();
                    while (rdr.MoveToNextAttribute())
                        attributes[rdr.Name] = rdr.Value;

                    if (elementInfo != null)
                        yield return elementInfo;

                    elementInfo = new ElementInfo
                    {
                        Name = elementName,
                        ParentNames = parentNames.ToList(),
                        Attributes = attributes,
                        Text = elementValue,
                    };

                    prevDepth = elementDepth;
                    prevName = elementName;
                }
                else if (rdr.NodeType == XmlNodeType.Text && elementInfo != null)
                {
                    elementInfo.Text = rdr.Value;
                    yield return elementInfo;
                    elementInfo = null;
                }
            }

            // last one
            if (elementInfo != null)
                yield return elementInfo;
        }
    }

    static void streamElements_TEST()
    {
        //
        using (var file = System.IO.File.OpenRead(@"C:\Temp\test.xml"))
        {
            var elements = StreamElements(file);

            var stuff = from e in elements
                        //where e.ParentNames.Count == 2
                        select e;
            foreach (var item in stuff)
            {
                Debug.WriteLine(string.Join(" / ", ((IEnumerable<string>)item.ParentNames).Reverse()));
                Debug.Write("    " + item.Name);
                if (item.Text != null)
                    Debug.Write(" = '" + item.Text.Trim() + "'");
                Debug.WriteLine("");
                foreach (var attr in item.Attributes)
                {
                    Debug.WriteLine($"       * {attr}");
                }
            }

        }

    }
}