Pattern之Dispose
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1.managed resources和unmanaged resources的区别?
通过.Net framework class使用的都是managed resource;unmanaged resource只有在你使用Win32 API才有可能得到
2. 为什么需要显式释放managed resources?
有时managed resources占用太多资源,需要尽早释放
3.什么时候也需要实现析构函数即Finalize?
不要实现除非拥有unmanaged resources.实现Finalize会使对象的回收时间推迟