tags:

views:

59

answers:

2
+5  Q: 

Why would Visual Studio 2010 say it can't show a variable during debug?

In Visual Studio 2010 sometimes when I want to get the value of a variable while debugging, it tells me that it "does not exist in this context" when it obviously does.

I have found that if I use the variable, as in the screenshot below, then it is able to show it.

Has anyone experienced this? Visual Studio 2008 never did this.

How can I get Visual Studio 2010 to always show me variable values while debugging?

alt text

+3  A: 

Hazarding a guess..

Could it be that your running in Release mode and the variable has been optimized out? Once you actually use the value, then it no longer can optimize the value out?

Zach Bonham  2010-05-06 21:43:02
Can you even use the debugger in Release mode?
Chris  2010-05-06 21:44:35
you bet! Change your build configuration to 'Release' and hit F5 - should still run, though YMMV with optimizations enabled. I'm only guessing thats what might be whats seen here.
Zach Bonham  2010-05-06 21:48:17
Far out... your idea seems pretty likely then.
Chris  2010-05-06 21:49:58
that was it, I didn't know you could debug in release mode so it didn't occur to me, thanks!
Edward Tanguay  2010-05-06 21:53:21
A: 

Is GetListOfFileNames() deferring execution? Try tacking .ToList() on it.

Chris  2010-05-06 21:43:54

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