在VBA中优化查询的最佳工具是什么？为什么？

I'm fairly new to programming and I was wondering; What are the best ways to time and optimize my code? The code I'm currently wanting to time is a series of queries in VBA for MS-Access, but I would also like to time code in VB.NET and ASP.NET as well. I'm fairly new to programming and I was wonderi