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XmlDiffView dv = new XmlDiffView();
        //Load the original file again and the diff file.
        XmlTextReader orig = new XmlTextReader(oldXML);
        XmlTextReader diffGram = new XmlTextReader(diffXML);
        dv.Load(orig,
            diffGram);

        //Wrap the HTML file with necessary html and
        //body tags and prepare it before passing it to the GetHtml method.

        string tempFile = @"C:UsersABCDesktopdiffView.html";
        StreamWriter sw1 = new StreamWriter(tempFile);
        sw1.Write("<html><body><table width='100%'>");


        dv.GetHtml(sw1);
        sw1.Write("</table></body></html>");
        sw1.Close();
        dv = null;
        orig.Close();
        diffGram.Close();