partial void DeleteHD_Category(HD_Category instance);
partial void UpdateHD_Category(HD_Category instance);
private void detach_Category(HD_Category entity) { this.SendPropertyChanging(); entity.ParentHD_Category = null; }
partial void InsertHD_Category(HD_Category instance);
private void attach_Category(HD_Category entity) { this.SendPropertyChanging(); entity.ParentHD_Category = this; }