partial void DeleteCourseArrange(CourseArrange instance);
partial void UpdateCourseArrange(CourseArrange instance);
private void detach_CourseArrange(CourseArrange entity)
{
this.SendPropertyChanging();
entity.CourseInfo = null;
}
partial void InsertCourseArrange(CourseArrange instance);
protected bool CanBeBooked(CourseArrange arrange, StudentInfo student)
{
if (student == null || arrange == null || arrange.Capacity <= arrange.CourseBookInfo.Count || IsBooked(student, arrange.CourseInfo))
return false;
else return true;
}