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Asked: 2026-06-06T13:23:26+00:00

Possible Duplicate: How can I conditionally compile my C# for Mono vs. Microsoft .NET?

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Possible Duplicate:
How can I conditionally compile my C# for Mono vs. Microsoft .NET?

I’m writing code in C# that uses .NET reflection fairly aggressively, including some features that aren’t yet available in Mono. The easy way for me to handle this is with a small number of conditionals:

 #if MONO
        ... stuff that works on mono ....
 #else
        ... stuff that works on .NET 4.0 but not (yet) on mono ...
 #endif

So here’s my question: are there any predefined flags I could test this way that either the Mono csharp compiler would have defined automatically, or if not, that the .NET csharp compiler predefines, that I can test this way?

It needs to be a compile-time test (I know how to determine the platform at runtime, but that would be too late)

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1 Answer

  1. Editorial Team

    Determining the platform at runtime is preferred thing to do. It’s not uncommon that program is compiled with Mono’s C# compiler and run on .NET (it’s even possible to run Mono’s C# compiler straight on .NET runtime).

    __MonoCS__ is intended for compiler workarounds only and should never be used to limit target platform.

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