partial void DeleteTrainRoute(TrainRoute instance);
 partial void UpdateTrainRoute(TrainRoute instance);
		private void detach_TrainRoutes1(TrainRoute entity)
		{
			this.SendPropertyChanging();
			entity.City1 = null;
		}
 partial void InsertTrainRoute(TrainRoute instance);
		private void attach_TrainRoutes1(TrainRoute entity)
		{
			this.SendPropertyChanging();
			entity.City1 = this;
		}