private void detach_CourseDays(CourseDays entity)
{
this.SendPropertyChanging();
entity.Courses = null;
}
private void attach_CourseDays(CourseDays entity)
{
this.SendPropertyChanging();
entity.Courses = this;
}
partial void UpdateCourseDays(CourseDays instance);
partial void DeleteCourseDays(CourseDays instance);
partial void InsertCourseDays(CourseDays instance);