private void updateCourseSelector()
 {
     RegisterCourseController register_course_controller = new RegisterCourseController();
     cbbCourseSelector.DataSource = register_course_controller.getEligibleCourse(Member.member_id);
     cbbCourseSelector.DisplayMember = "course_designation";
     cbbCourseSelector.ValueMember = "course_designation";
 }
        private void updateCourseSelector()
        {
            RegisterCourseController register_course_controller = new RegisterCourseController();

            cbbCourseSelector.DataSource    = register_course_controller.getEligibleCourse(Member.member_id);
            cbbCourseSelector.DisplayMember = "course_designation";
            cbbCourseSelector.ValueMember   = "course_designation";
        }
        private void btnRegisterCourse_Click(object sender, EventArgs e)
        {
            RegisterCourseController register_course_controller = new RegisterCourseController();
            string result = register_course_controller.addCourse(
                Member.member_id,
                cbbCourseSelector.SelectedValue.ToString() );

            if (result == "ok")
            {
                MessageBox.Show("Course is added!");
            }
            else
            {
                MessageBox.Show("Course fails to add! Reason: " +result);
            }
            updateCourseSelector();
        }
        private void btnRegisterCourse_Click(object sender, EventArgs e)
        {
            RegisterCourseController register_course_controller = new RegisterCourseController();
            string result = register_course_controller.addCourse(
                Member.member_id,
                cbbCourseSelector.SelectedValue.ToString());

            if (result == "ok")
            {
                MessageBox.Show("Course is added!");
            }
            else
            {
                MessageBox.Show("Course fails to add! Reason: " + result);
            }
            updateCourseSelector();
        }