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Asked: 2026-05-26T00:27:01+00:00

I have a C# application that I am building with Visual Studio 2010. To

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I have a C# application that I am building with Visual Studio 2010. To help me with some of my routine tasks in the app, I wanted to set some values if I compiled the app in debug mode. Naturally, I though preprocessor directives would be a good idea. My problem is, I don’t quite understand how to use them. At this time, I have a block of code that looks like this:

#define DEBUG

... // Other code in my app

#if DEBUG
  myVariable = debugValue;
#endif

My problem is, when I compile my app in release mode, myVariable still gets set to debugValue. It’s like I’m not properly defining my preprocessor variable or I’m not configuring my compiler correctly. Can anybody explain to me what I need to do so that myVariable is only set to debugValue when I compile the app in debug mode?

Thank you!

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1 Answer

  1. Editorial Team

    If you are using #define DEBUG to specify the debug symbol, switching to release mode will still provide the symbol, since you are explicitly defining it.

    Try removing the #define DEBUG line in your code files. By default VS defines DEBUG and TRACE in debug mode and TRACE in release mode, so its not necessary to explicitly define them.

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