partial void DeleteCoupon(Coupon instance);
partial void UpdateCoupon(Coupon instance);
private void detach_Coupons(Coupon entity)
{
this.SendPropertyChanging();
entity.Order = null;
}
partial void InsertCoupon(Coupon instance);
private void attach_Coupons(Coupon entity)
{
this.SendPropertyChanging();
entity.Order = this;
}