有没有办法比较C#中_MSC_VER的值？ 或者有另一种方法可以获取 C# 中的编译器版本吗？

Question

I'd like to get the version of Visual Studio used to build a C# project without having to resort to C++/CLI. When I use the following in C# the compiler complains.

#if (_MSC_VER == 1500)
   // ... Do VC9/Visual Studio 2008 specific stuff
#elif (_MSC_VER == 1600)
   // ... Do VC10/Visual Studio 2010 specific stuff
#elif (_MSC_VER == 1700)
   // ... Do VC11/Visual Studio 2012 specific stuff
#endif

Is there a way to do this? Thanks

Answer 1

One alternative would be to define symbols for conditional compilation within the project properties. For instance, you could add, DevEnv17 for VS2022 and DevEnv16 for VS2019.

Ensure you define the right symbols in project properties

<Choose>
    <When Condition=" '$(VisualStudioVersion)' == '17.0' "> 
        <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|Release|AnyCPU' ">
            <DefineConstants>DevEnv17</DefineConstants>
        </PropertyGroup>
    </When>
    <When Condition=" '$(VisualStudioVersion)' == '16.0' "> 
        <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|Release|AnyCPU' ">
            <DefineConstants>DevEnv16</DefineConstants>
        </PropertyGroup>
    </When>
</Choose>

Then you could use C# preprocessor directives as below

#if DevEnv17
    //Do VS2022 specific stuff
#elif DevEnv16
    //Do VS2019 specific stuff
#else
    //Do other VS IDE version stuff
#endif

Visual Studio 2022:

Visual Studio 2019: