private Reviewer reviewerParser(XmlNodeReader reader)
        {
            Reviewer r = new Reviewer(reader.GetAttribute("id"));
            reader.Read();
            reader.Read();
            r.setName(reader.Value);
            reader.Read();
            reader.Read(); //name - end tag
            if (reader.NodeType == XmlNodeType.EndElement)
                return r;
            reader.Read();
            r.setCompany(reader.Value);

            return r;
        }
        public void writeXML(Band[] bands, Reviewer[] reviewers)
        {
            if (!File.Exists(filePath))
                using(File.Create(filePath));

            using (XmlWriter writer = XmlWriter.Create(filePath))
            {
                writer.WriteStartDocument(); // start document
                writer.WriteStartElement("root", "http://www.w3.org/2001/XMLSchema-instance"); //start root
                foreach (Band b in bands)
                {
                    writer.WriteStartElement("band"); // start band
                    writer.WriteAttributeString("name", b.getName());
                    writer.WriteAttributeString("size", b.getSize());
                    foreach (Member m in b.getMembers())
                    {
                        writer.WriteStartElement("member"); //start member
                        writer.WriteAttributeString("name", m.getName());
                        writer.WriteAttributeString("instrument", m.getInstrument());
                        writer.WriteElementString("join-date", m.getJoinDate());
                        writer.WriteEndElement(); // end memeber
                    }
                    foreach (Album a in b.getAlbums())
                    {
                        writer.WriteStartElement("album"); //start album
                        writer.WriteAttributeString("name", a.getName());
                        foreach (Song s in a.getSongs())
                        {
                            writer.WriteStartElement("song"); //start song
                            writer.WriteElementString("name", s.getName());
                            writer.WriteElementString("tracklength", s.getlength());
                            writer.WriteEndElement(); //end song
                        }
                        foreach (Review r in a.getReviews())
                        {
                            writer.WriteStartElement("reviewer"); // start review
                            writer.WriteAttributeString("ref", r.getReviewerId());
                            writer.WriteString(r.getReview());
                            writer.WriteEndElement(); // end review
                        }
                        writer.WriteEndElement(); // end album
                    }
                    if (b.getShows().Length > 0)
                    {
                        writer.WriteStartElement("show");
                        foreach (Show s in b.getShows())
                        {
                            writer.WriteElementString("date", s.getDate());
                            writer.WriteElementString("venue", s.getVenue());

                        }
                        writer.WriteEndElement(); //end show
                    }
                    writer.WriteEndElement(); //end band
                }

                foreach (Reviewer r in reviewers)
                {
                    writer.WriteStartElement("reviewer"); // start reviewer
                    writer.WriteAttributeString("id", r.getId());
                    if (r.getName().Length > 0)
                        writer.WriteElementString("name", r.getName());
                    if (r.getCompany().Length > 0)
                        writer.WriteElementString("company", r.getCompany());
                    writer.WriteEndElement(); //end reviewer
                }

                writer.WriteEndElement();   //end root
                writer.WriteEndDocument(); //end document
            }
        }