I am trying to use xmldiffpatch when comparing two Xmls(one from a stream, the other from a file) and writing the diff patch to a stream.

The first method is to write my xml to a memory stream. The second method loads an xml from a file and creates a stream for the patched file to be written into. The third method actually compares the two files and writes the third. The xmldiff.Compare(originalFile, finalFile, dgw); method takes (XmlReader, XmlReader, XmlWriter). I'm always getting that both files are identical, even though they are not, so I know that I am missing something.

Any help is appreciated!

public MemoryStream FirstXml() 

    {
        string[] names = { "John", "Mohammed", "Marc", "Tamara", "joy" };
        MemoryStream ms = new MemoryStream();
        XmlTextWriter xtw= new XmlTextWriter(ms, Encoding.UTF8);

        xtw.WriteStartDocument();
        xtw.WriteStartElement("root");

        foreach (string s in names)
        {
        xtw.WriteStartElement(s);
        xtw.WriteEndElement();
        }
        xtw.WriteEndElement();
        xtw.WriteEndDocument();
        return ms;
    }

    public Stream SecondXml()
    {
        XmlReader finalFile =XmlReader.Create(@"c:\......\something.xml");
        MemoryStream ms = FirstXml();
        XmlReader originalFile = XmlReader.Create(ms);
        MemoryStream ms2 = new MemoryStream();
        XmlTextWriter dgw = new XmlTextWriter(ms2, Encoding.UTF8);
        GenerateDiffGram(originalFile, finalFile, dgw);
        return ms2;
    }

    public void GenerateDiffGram(XmlReader originalFile, XmlReader finalFile,
                                XmlWriter dgw)
    {
        XmlDiff xmldiff = new XmlDiff();
        bool bIdentical = xmldiff.Compare(originalFile, finalFile, dgw);
        dgw.Close();
        StreamReader sr = new StreamReader(SecondXml());
        string xmlOutput = sr.ReadToEnd();
        if(xmlOutput.Contains("</xd:xmldiff>"))
        {Console.WriteLine("Xml files are not identical");
            Console.Read();}

        else
        {Console.WriteLine("Xml files are identical");Console.Read();}

    }