Pre-Processor Conditional Directives
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C# Preprocessor Directives
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Basic Usage
The most often used of directives are:-
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#define -
#if -
#endif
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The #define directive allows you to define a pre-processor variable, this is pretty useless on its own, but used in conjunction with the #if and #endif directives it allows you to compile code depending on if a variable has been defined. Visual studio greys out code that will not be compiled.
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Example 1
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Example 2
Notice the grey line of code on line 14; this will not be executed as it is not compiled
