由网友(ωǒ不特別卻是唯１╮)分享简介：在64位版本的Windows中，32位软件将安装在C：\ Program Files文件（x86）的。这意味着你不能使用$（PROGRAMFILES）来获得路径（32位）的软件。所以，我需要一个$（ProgramFiles32）克服这在我的MSBuild项目。我并不想改变这取决于它是运行在OS项目。In 64 bit...

在64位版本的Windows中，32位软件将安装在C： Program Files文件（x86）的。这意味着你不能使用$（PROGRAMFILES）来获得路径（32位）的软件。所以，我需要一个$（ProgramFiles32）克服这在我的MSBuild项目。我并不想改变这取决于它是运行在OS项目。

In 64 bit versions of windows, 32 bit software is installed in "c:program files (x86)". This means you cannot use $(programfiles) to get the path to (32 bit) software. So I need a $(ProgramFiles32) to overcome this in my MSBuild project. I don't want to change the project depending on the os it is running on.

我有我将发布一个解决方案，但也许有一个更简单/更好的办法。

I have a solution that I will post, but maybe there is a easier/better way.

推荐答案

在MSBuild的4.0+，有一个 $（MSBuildProgramFiles32）属性它，你可以放心地直接使用（特别是如果你ppared把$ P $一个 ToolsVersion =4.0在文件的顶部，以保证它的将是提供快速失败如果它不是）。

In MSBuild 4.0+, there's a $(MSBuildProgramFiles32) property for it, which you can confidently employ directly (especially if you're prepared to put a ToolsVersion="4.0" at the top of the file to guarantee it's going to be available and Fail Fast if it's not).

如果你不和需要的东西，可以做正确的事情，即使在MSBuild的2.0或更高版本的环境中执行（即回VS 2005环境），完整的解决方案是：

If you're not and need something that can Do The Right Thing even when executed in an MSBuild 2.0 or later environment (i.e., back to VS 2005 environments), the complete solution is:

<PropertyGroup>
    <!--MSBuild 4.0 property-->
    <ProgramFiles32>$(MSBuildProgramFiles32)</ProgramFiles32> 
    <!--Use OS env var as a fallback:- 32 bit MSBuild 2.0/3.5 on x64 will use this-->
    <ProgramFiles32 Condition=" '' == '$(ProgramFiles32)'">$(ProgramFiles%28x86%29)</ProgramFiles32>

    <!-- Handle MSBuild 2.0/3.5 running in 64 bit mode - neither of the above env vars are available. http://stackoverflow.com/questions/336633
       NB this trick (Adding a literal " (x86)" to the 64 bit Program Files path) may or may not work on all versions/locales of Windows -->
    <ProgramFiles32 Condition ="'$(ProgramFiles32)'=='' AND 'AMD64' == '$(PROCESSOR_ARCHITECTURE)'">$(ProgramFiles) (x86)</ProgramFiles32>

    <!--Catch-all - handles .NET 2.0/3.5 non-AMD64 and .NET 2.0 on x86 -->
    <ProgramFiles32 Condition=" '' == '$(ProgramFiles32)' ">$(ProgramFiles)</ProgramFiles32>
</PropertyGroup>

不幸的是渐进增强 /的在的MSBuild保留属性名称 MSBuildProgramFiles32 通过一根＆LT;的PropertyGroup＆GT; 或＆LT; CreateProperty＆GT; 被拒绝的MSBuild 4.0+，因此无法进行更为简洁并且还支持.NET 2.0。

Unfortunately Progressive enhancement / polyfill overriding of the MSBuild reserved property name MSBuildProgramFiles32 via either a <PropertyGroup> or <CreateProperty> is rejected by MSBuild 4.0+ so it can't be made tidier and still support .NET 2.0.