partial void DeleteSalesDistrict3(SalesDistrict3 instance);
partial void InsertSalesDistrict3(SalesDistrict3 instance);
partial void UpdateSalesDistrict3(SalesDistrict3 instance);
private void detach_SalesDistrict3s(SalesDistrict3 entity) { this.SendPropertyChanging(); entity.SalesDistrict2 = null; }