Comparing XML fragments and return differences

I have an audit list full of serialized objects, and I would like to compare them and return a list of differences. Under "compare", I want to say that I want to go back to where the text for the element was changed, or where the node was added (therefore it is not in Xml1, but it is in Xml2 - this will not happen the other way around)

Xml example:

<HotelBookingView xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <Id>119</Id>
  <RoomId>1</RoomId>
  <ChangeRequested>false</ChangeRequested>
  <CourseBookings>      
    <CourseHotelLink>
      <Id>0</Id>
    </CourseHotelLink>
</CourseBookings>
</HotelBookingView>

Namespaces and tag names / cases will not change. All that can change in this example is the values ​​between the tags and the number "CourseHotelLink" (its serialized list).

The end result I need is a list from which node has changed - the old value and the new value.

? .Net 4.0, linq - . , , . , , , .

XmlDocument Xml1 = new XmlDocument();
XmlDocument Xml2 = new XmlDocument();
Xml1.LoadXml(list[1].Changes);
Xml2.LoadXml(list[2].Changes);
foreach (XmlNode chNode in Xml2.ChildNodes)
{
   CompareLower(chNode);
}

protected void CompareLower(XmlNode aNode)
{
    foreach (XmlNode chlNode in aNode.ChildNodes)
    {
        string Path = CreatePath(chlNode);
        if (chlNode.Name == "#text")
        {
            //all my efforts at comparing text have failed
            continue;
        }
        if (Xml1.SelectNodes(Path).Count == 0)
        {
            XmlNode TempNode = Xml1.ImportNode(chlNode, true);
            //node didn't used to exist, this works- though doesn't return values
            str = str + "New Node: " + TempNode.Name + ": " + TempNode.Value;
        }
        else
        {
            CompareLower(chlNode);
        }
    } 
}

, - , , !

, : MS Xml Diff Tool, html xml, . , ( ) html, , "lightgreen" ( ), , child- node.

var node1 = XElement.Parse("Xml string 1 here").CreateReader();
var node2 = XElement.Parse("Xml string 2 here").CreateReader();

MemoryStream diffgram = new MemoryStream();
XmlTextWriter diffgramWriter = new XmlTextWriter(new StreamWriter(diffgram));

XmlDiff xmlDiff = new XmlDiff(XmlDiffOptions.IgnoreChildOrder);
xmlDiff.Algorithm = XmlDiffAlgorithm.Fast;
xmlDiff.Compare(node1, node2,diffgramWriter);

diffgram.Seek(0, SeekOrigin.Begin);
XmlDiffView xmlDiffView = new Microsoft.XmlDiffPatch.XmlDiffView();
StringBuilder sb = new StringBuilder();
TextWriter resultHtml = new StringWriter(sb);
xmlDiffView.Load("Xml string 1", new XmlTextReader(diffgram)); 

xmlDiffView.GetHtml(resultHtml);
resultHtml.Close();