Preprocessor directives and unnecessary Using directives

Question

I have some code that i need only to be run in a deployed environment (stage/test/production).

The code genereates some usings to other namespaces that appear at the top of the .cs file.

However, when i put this code inside my preprocessor directive #IF !DEBUG the usings at the top of the .cs file now claims

Using directive is unnecessary.

This feels dangerous. Since this is a multiple personnell project, i fear that someone is going to enter this file at some point and just auto-remove the usings since they're flagged as unnecessary.

My current solution is to just comment the code at the top of the file to not remove them.

So, how can i make my unnecessary usings directives non-unnecessary?

@MurrayFoxcroft no, is that a thing? I was not aware that was a thing. — Jens Bergvall
– Jens Bergvall, Commented Aug 29, 2019 at 11:53
Either fully qualify the types used in the ifdef section, or place the using directives inside #ifdef's as well. — Lasse V. Karlsen
– Lasse V. Karlsen, Commented Aug 29, 2019 at 11:59

Murray Foxcroft · Accepted Answer · 2019-08-29 13:14:54Z

Place your usings a #IF too:

#IF !DEBUG using MySpecialStuff #endif public class MyClass { static void Main() { #IF !DEBUG var msc = new MySpecialClass(); #endif } }

Or, fully qualify the class you need in the declaration.

public class MyClass { static void Main() { #IF !DEBUG var msc = new MySpecialStuff.MySpecialClass(); #endif } }

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