public void ExecuteTxMethod()
{
Course course1 = new Course();
course1.CourseId = "AAA";
course1.CourseName = "AAA";
course1.CourseDescription = "111";
CourseDao.AddCourse(course1);
Course course2 = new Course();
course2.CourseId = "BBB";
course2.CourseName = "BBB";
course2.CourseDescription = "222";
CourseDao.AddCourse(course2);
Course dbCourse = CourseDao.GetCourseByCourseId("AAA");
dbCourse.CourseName = "XXX";
throw new Exception("Get an exception");
}