Looking for a preprocessor directive in c# for importing dll based on whether the executable is 64bit or 32 bit:
#if WIN64
[DllImport("ZLIB64.dll", CallingConvention=CallingConvention.Cdecl)]
#else
[DllImport("ZLIB32.dll", CallingConvention=CallingConvention.Cdecl)]
unload and edit the .csproj file, add:
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x64' ">
<DefineConstants>WIN64;$(DefineConstants)</DefineConstants>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x64' ">
<DefineConstants>WIN64;$(DefineConstants)</DefineConstants>
</PropertyGroup>
use:
#if WIN64
...
#endif
Regards