VS 2015 Update 2-调试时不存在变量，为什么? [英] VS 2015 Update 2 - Variable does not exist when debugging, why?

问题描述

我正在将VS 2015 Update 2与配置为调试模式的asp.net 5 Web项目一起使用.当我使用F5运行项目以对其进行调试并达到断点时，即使在范围内，某些变量也无法在监视窗口中观察到.此外，如果将鼠标悬停在此类变量上，则不会显示任何值.

I'm using VS 2015 Update 2 with an asp.net 5 web project configured for debug mode. When I run the project with F5 to debug it and hit a break point, some variables can not be observed in the watch window even when they are in scope. Further, if I hover over such variables no value is displayed.

如果我使用同一Visual Studio创建一个空的Web项目并添加一个Webform并将代码放置在load方法中，则调试器可以正常工作.也就是说，我可以在监视窗口中看到变量，并且可以通过将它们悬停在变量上来查看它们的值.我从中得知，问题的根本原因不是VS2015 Update 2，而是与项目或解决方案配置有关，也许特定于asp.net 5 Web项目.

If I use the same visual studio to create an empty web project and add a webform and place the code in the load method, the debugger works fine. That is to say, I can see the variables in the watch window and I can see their values by hovering over them. I glean from this that the root cause of the issue is not VS2015 Update 2 but rather something to do with the project or solution configuration, perhaps specific to asp.net 5 web projects.

我已经在网上搜寻了答案，并且在尝试调试编译器优化的代码时也会发生类似的问题.但是我正在调试模式下运行该解决方案.有什么建议吗?

I've scoured the web for answers and similar problems happen when trying to debug compiler optimized code. But I am running the solution in debug mode. Any suggestions?

我知道变量在调试时的当前环境，但是它适用于其他版本的Visual Studio，那里提供的解决方案不能解决我的问题.

I am aware of Variable does not exist in the current context while debugging but it applies to a different version of visual studio and the solutions offered there do not fix my issue.

推荐答案

这是Visual Studio 2015 Update 2中引入的错误.本质上，调试器无法检查动态模块中的局部变量.我们今天为它发布了一个修补程序.您可以在此处下载补丁.修补程序的文档位于此处.让我知道补丁是否不能解决您的特定情况.

This is a bug that was introduced in Visual Studio 2015 Update 2. Essentially the debugger is unable to inspect local variables in dynamic modules. We released a hotfix for it today. You can download the patch here. Documentation for the patch is here. Let me know if the patch does not fix your particular scenario.

谢谢！

-帕特里克·纳尔逊(patrick Nelson)

-Patrick Nelson

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