public RegisterViewModel()
        {
            StaffEntities db      = new StaffEntities();
            Sess          Session = db.Sesses.Find(2894);

            SampleDoc           = new FlowDocument();
            SampleDoc.PageWidth = 1200;
            SampleDoc.Blocks.Add(SessionRegister.Generate(Session));
            SampleDoc.Blocks.Add(new Paragraph(new Run("Trainers, please add any DNAs and ensure this is returned to the IT Training Administrator as soon as possible - fax if necessary 0161 716 3391")));
            NotifyPropertyChanged("SampleDoc");
        }
        public DBViewModel()
        {
            //set db context
            if (db == null)
            {
                db = new StaffEntities();
            }

            LoadRefData();
            LoadInitalData();
            AssignCommands();
            InitalDisplayState();
        }