Editor.Services.PageServices.GetRawHtmlById C# (CSharp) Method

        public RawHtml GetRawHtmlById(int Rawhtmlid)
        {
            using (ISession session = HibernateHelper.GetSession().OpenSession()) {
                using (ITransaction transaction = session.BeginTransaction()) {
                    try {
                        RawHtml pel = new RawHtml();
                        pel = HibernateHelper.SelectIstance<RawHtml>(session, new string[] { "Rawhtmlid" }, new object[] { Rawhtmlid }, new Operators[] { Operators.Eq });

                        return pel;

                    } catch (Exception ex) {
                        throw ex;
                    } finally {
                        session.Flush();
                        session.Close();
                    }
                }

            }
        }

    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack) {
            string idPageElement = Request.QueryString["idpel"];
            iditemamm = Convert.ToInt32(Request.QueryString["iditem"]);
            PageServices pgserv = new PageServices();

            PageElementDTO pel = new PageElementDTO();
            pel = pgserv.GetPageelementByPageelementID(Convert.ToInt32(idPageElement));

            RawHtml row = new RawHtml();
            row = pgserv.GetRawHtmlById(pel.Rawhtmlid);
            edit.Text = row.Value;
            RawHtmlId = row.Rawhtmlid;
        }
    }