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c#scopec-preprocessorpreprocessor-directive

c# Pre-processor directive scope

I'm looking to use: 

#define

and

#if

to allow me to simulate potentially absent hardware during unit tests. What are the rules for using the #define statements?

i.e. what is its default scope? can I change the scope of the directive?

Solution

  • As Chris said, the scope of #define is just the file. (It's worth noting that this isn't the same as "the class" - if you have a partial type, it may consist of two files, one of which has symbol defined and one of which doesn't!

    You can also define a symbol project-wide, but that's done with project properties or a compiler switch rather than being specified in source code.