Variable does not exist in the current context while debugging

Question

I inserted two temp variables and want to see their values, but I can\'t. I could solve it by placing it somewhere else, but I\'m interested why this behaviour exists.

Answer 1

I've encountered another scenario in VS2012 that causes variables to "disappear" while in debug mode:

make sure you don't have this:

if(false)
   {
   .
   }
else
   {
   //Code here will be optimized and variables will not be available.
   }