partial void DeleteSalesDistrict2(SalesDistrict2 instance);
 partial void InsertSalesDistrict2(SalesDistrict2 instance);
 partial void UpdateSalesDistrict2(SalesDistrict2 instance);
		private void detach_SalesDistrict2s(SalesDistrict2 entity)
		{
			this.SendPropertyChanging();
			entity.SalesDistrict1 = null;
		}