.NET 调试时遇到错误：it has been optimized away

今天用.NET2008调试一个项目时遇到一个问题：进入DLL项目后，点击右键监视类变量，不能显示变量值，显示“it is not available at this instruction pointer, possibly because it has been optimized away.”错误。 解决方法如下： 1.在项目上点击右键选择属性[Properties]，打开属性窗口； 2.切到[Build]选项中，将[Optimize Code]取消选中状态 OK