C # preprocessor directive - study

 

To learn more about how to use C # preprocessor directives selectively to compile code segments, see #define (C # Reference) and #if (C # Reference) .

#define (C # Reference)

Address: https: //docs.microsoft.com/zh-cn/dotnet/csharp/language-reference/preprocessor-directives/preprocessor-define

#if (C # Reference)

Address: https: //docs.microsoft.com/zh-cn/dotnet/csharp/language-reference/preprocessor-directives/preprocessor-if

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Change the code will only run in debug mode

 #if DEBUG
    Console.WriteLine("Debug version");
 #endif