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;
}