How to use #if to decide which platform is being compiled for in C#

Question

In C++ there are predefined macros:

#if defined(_M_X64) || defined(__amd64__)
    // Building for 64bit target
    const unsigned long MaxGulpSize = 1048576 * 128         


        

Answer 1

You can add any constants you want to the .csproj file. These can be put into conditional property groups like the one below.

 
    TRACE;X64
    ...
 

For my Release x64 build, I have defined a X64 constant that I can use like this:

#if X64

#endif