public static void Update_Student_Rating_In_DB(Student s)
        {
            SqlCommand c = new SqlCommand();

            c.CommandText = "EXECUTE dbo.SP_Update_Student_Rating @ID, @Rating ";
            c.Parameters.AddWithValue("@ID", s.getId());
            c.Parameters.AddWithValue("@Rating", s.getRating());
            SQL_CON SC = new SQL_CON();

            SC.execute_non_query(c);
        }