private void detach_Gorod(Gorod entity)
		{
			this.SendPropertyChanging();
			entity.type_gorod = null;
		}
		private void attach_Gorod(Gorod entity)
		{
			this.SendPropertyChanging();
			entity.type_gorod = this;
		}
 partial void DeleteGorod(Gorod instance);
		private void attach_Gorod(Gorod entity)
		{
			this.SendPropertyChanging();
			entity.Raion = this;
		}
 partial void UpdateGorod(Gorod instance);
 partial void InsertGorod(Gorod instance);