public void Start()
        {
            string conStr = "user id=username;" +
                                       "password=password;server=localhost;" +
                                       "Trusted_Connection=yes;" +
                                       "database=БД;";
            using (SqlConnection con = new SqlConnection(conStr))
            {
                string Sql = "SELECT Subjects(Subjects)" +
                                  "FROM Subjects" +
                                  "ORDER BY Subjects";
                List<string> subj = new List<string>();
                con.Open();
                SqlCommand sc = new SqlCommand(Sql,con);
                SqlDataReader dr = sc.ExecuteReader();

                while (dr.Read())
                {
                    subj.Add(dr.GetString(0));
                }
            }
        }