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; }