private void detach_OderDetails(OderDetail entity)
{
this.SendPropertyChanging();
entity.Coupon = null;
}
partial void DeleteOderDetail(OderDetail instance);
partial void InsertOderDetail(OderDetail instance);
partial void UpdateOderDetail(OderDetail instance);
private void attach_OderDetails(OderDetail entity)
{
this.SendPropertyChanging();
entity.Zone = this;
}