public IList <Course> ListCourseByUserId(long userId)
{
if (userId < 0)
{
throw new ArgumentException();
}
List <Course> courseList = _iCourseDao.ListCourseByUserId(userId);
//查不到课程
return(courseList);
}
public IList <Course> ListCourseByUserId(long userId)
{
try
{
if (userId < 0)
{
throw new ArgumentException();
}
List <Course> courseList = _iCourseDao.ListCourseByUserId(userId);
//查不到课程
if (courseList == null || courseList.Count == 0)
{
throw new CourseNotFoundException();
}
return(courseList);
}
catch
{
throw;
}
}