public static void Update(Mesto m)
        {
            using (var conn = new SQLiteConnection(ConfigurationManager.ConnectionStrings["Dijagnoze"].ConnectionString))
            {
                conn.Open();

                SQLiteCommand cmd = conn.CreateCommand();


                cmd.CommandText = "UPDATE mesto SET mesto = @mesto WHERE id = @id";

                cmd.Parameters.AddWithValue("Id", m.Id);
                cmd.Parameters.AddWithValue("mesto", m.MestoStanovanja);


                cmd.ExecuteNonQuery();
            }
            //azuriranje modela
            foreach (var mesto in Aplikacija.Instance.Mesto)
            {
                if (m.Id == mesto.Id)
                {
                    mesto.MestoStanovanja = m.MestoStanovanja;
                }
            }
        }
        public static ObservableCollection <Mesto> GetAll()
        {
            var mesto = new ObservableCollection <Mesto>();

            using (var conn = new SQLiteConnection(ConfigurationManager.ConnectionStrings["Dijagnoze"].ConnectionString))
            {
                SQLiteCommand     cmd = conn.CreateCommand();
                SQLiteDataAdapter da  = new SQLiteDataAdapter();
                cmd.CommandText  = "SELECT * FROM Mesto";
                da.SelectCommand = cmd;
                DataSet ds = new DataSet();
                da.Fill(ds, "mesto");

                foreach (DataRow row in ds.Tables["mesto"].Rows)
                {
                    var m = new Mesto();
                    m.Id = int.Parse(row["Id"].ToString());

                    m.MestoStanovanja = row["Mesto"].ToString();

                    mesto.Add(m);
                }
            }
            return(mesto);
        }
        public static Mesto Create(Mesto m)
        {
            using (var conn = new SQLiteConnection(ConfigurationManager.ConnectionStrings["Dijagnoze"].ConnectionString))
            {
                conn.Open();

                SQLiteCommand cmd = conn.CreateCommand();

                cmd.CommandText = "INSERT INTO mesto (mesto) VALUES(@mesto)";


                cmd.Parameters.AddWithValue("mesto", m.MestoStanovanja);

                cmd.ExecuteNonQuery();
            }

            Aplikacija.Instance.Mesto.Add(m);
            return(m);
        }